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The Samsung charger adapter which comes in the box is very slow in nature. It take more than 2 hours to charge my phone. I was wondering if I can use the following Nokia brand chargers which are fast chargers?
Nokia Charger Adapter CA-146C
Nokia Fast Micro-USB Charger AC-10
It won't make any difference the phone decides what current it draws from the charger, so it'll take just as long to charge.
Are you really sure about this? Can you link me to some articles which confirm this.
Even I was thinking about purchasing AC-10 charger from Nokia.
How fast is the nokia charger?
0-10% -> 100% in an hour or less?
Joey2o11 said:
It won't make any difference the phone decides what current it draws from the charger, so it'll take just as long to charge.
Click to expand...
Click to collapse
I'm not sure about this. I have a friend with a Blackberry Playbook and he reckons his phone charges much faster if he uses the charger from that.
The "stock" S2 charger is 700mA - it doesn't take a genius to work out that for a 1650mAh battery this will take about 2.5 hours to fully charge the battery under ideal conditions (phone off) or anything from 3-6 hours with the phone on, depending all what's running or if you're using the phone while it's charging.
Which is all pretty ridiculous - ok we're comparing apples and oranges when we compare a S2 to the likesw of a Nokia, but I do miss the days when I could charge my phone in an hour and have it last two or three days. I thought my Blackberry was bad but at least I can usually squeeze a full day out of it...
The only wall wart I had lying around that was more than 700mA was a 5V 2A supply. I've tried with that which works, but the phone chokes with a "battery overtemp" warning after about 10 minutes - which tells me I AM pumping more into the battery than it can handle. This would suggest that there IS a happy medium where we can optimize the battery charge time - I'm bust looking for a 1A supply...
I have TWO AC-10Xs, and am using it with the Ninphetamene kernel (which comes with increased charge input mods to 800ma) fine. Charges to full in about 2.5-3 hours.
I've never gotten overcharge errors either.
Hi,the usage of more powerful charger will eventually reduce lifespan of your battery. This comes from basic physics, materials and so... Higher mA means faster current, which wear the material of the capacitor - battery.
I have capdase 2 USB car charger that was used for my old iphone device.
It outputs 1A.
is it safe to use it?
I tried to charge with it for 10-15minutes or so, and didnt recognize any suspicious warmups...it reached 41~degrees while at the moment im charging and using it as a hotspot and its on 38 degrees.
DobermanS said:
Hi,the usage of more powerful charger will eventually reduce lifespan of your battery. This comes from basic physics, materials and so... Higher mA means faster current, which wear the material of the capacitor - battery.
Click to expand...
Click to collapse
The phone (specifically, the kernel) limits charge coming in, and there MUST be hardware limiters on the batteries and the phone themselves (which, in some cheapo batteries DON'T WORK and results in them frying themselves and the phone in process) and the batteries are replaceable anyway.
eranyanay said:
I have capdase 2 USB car charger that was used for my old iphone device.
It outputs 1A.
is it safe to use it?
I tried to charge with it for 10-15minutes or so, and didnt recognize any suspicious warmups...it reached 41~degrees while at the moment im charging and using it as a hotspot and its on 38 degrees.
Click to expand...
Click to collapse
i use htc wall charger rated at 1A and having no proplem with ,a pc USB port is capable of 1A and we all know there are no problem ,even so there are no visible improvement in charging time because as someone said the charging current is automatically regulated
ledavi said:
i use htc wall charger rated at 1A and having no proplem with ,a pc USB port is capable of 1A and we all know there are no problem ,even so there are no visible improvement in charging time because as someone said the charging current is automatically regulated
Click to expand...
Click to collapse
That's good to know that the current is regulated by the device.
Is there a software to see what is the current taken by the phone?
As long ad the temperture isn't higher than 45degrees is it ok?
By the way, Im pretty sure that usb outputs 0.5A and not 1A
Sent from my GT-I9100 using XDA Premium App
battery monitor widget
It seems logical to be able to use all chargers as smartphones all have micro usb .
(I 'm not sute that's mean something in english, sorry)
Great widget! thanks.
I really like the data it gives!
Sadly, while charging with my .7A original charger & meanwhile giving a hotspot to my laptop, it shows that only 76mA comes in!
hehe, gonna take forever to charge the battery this way.
i doubt this. i'm still worried about the compatible problem~~~
After two days with the battery monitor widget Im affraid itself it drains the battery.
could it be it affects the battery?
settings are regular, it monitors changes every 60seconds
Let's see if I can help make things a bit clearer. Feel free to correct where I may be off.
The Nokia thing, it's not a charger. It's a power supply.
The "charger" is built into your phone, hardware-wise.
How can I prove it?
Take the Samsung supplied cable, plug it into your computer. You'll see that your phone is charging too. No, the cable is not a charger. Do you think your computer is a special built charger for your phone? Hardly.
The charging circuit is within the phone, and thus charging the battery when there's available power.
Ok, so we have the charger (i.e. the mobile phone), we have the battery, we need the power. Where do we get power from? The wall adapters (or computers). So what are the wall adapters? Ratings of 1000mah means that the wall adapter can provide up to 1000ma per hour.
However, your charging circuit will determine how much current to actually draw. For example, drawing 800mah for 10 min may raise the temperature to 55 degrees, so after 10 min the charging circuit drops the charging current to 500mah.
Of course, if you're using el cheapo cables, some cables may not be able to support the current draw and you may find that even with 20000000mah power supplies your phone can only draw 100mah.
The SGS2 heats up pretty easily, and it doesn't quite draw beyond 700mah. The circuit built into the phone doesn't allow it to, if i'm not wrong. If your phone is overheating while charging, you better change your case as it's going to cause your phone to overheat sooner or later.
Using a 20000000mah power supply isn't an issue, because the charging circuit within the phone will be able to draw only a certain amount.
Me, I plug my SGS2 into a 2Ah charger every night to charge, and yes it's perfectly fine. I'm only upset that after buying an expensive 2A charger, I realised that the phone is not able to draw high currents (phone even heats up to 55degree Celsius when charging).
Charging the phone on a ice pack (which lowered the phone temperature to 16 degrees while charging) didn't increase the amount of current drawn by the phone, even on a 2A power supply.
My humble advise is, stick with the stock power supply, or at most get a 1A version. No need to splash for a 2A power supply. If you really need faster charging, get a battery charging dock.
eranyanay said:
After two days with the battery monitor widget Im affraid itself it drains the battery.
could it be it affects the battery?
settings are regular, it monitors changes every 60seconds
Click to expand...
Click to collapse
yes of course it does. It consumes a certain amount of ma per hour, doesn't it?
Personally, there's a app called watchdog, look for it, IMHO it helps to catch rouge apps better, and manage battery better.
I thought the whole idea of having a universal micro USB charging connection across most good brands was so you could use other chargers!
moooxooom said:
yes of course it does. It consumes a certain amount of ma per hour, doesn't it?
Personally, there's a app called watchdog, look for it, IMHO it helps to catch rouge apps better, and manage battery better.
Click to expand...
Click to collapse
Well I just like the widget, which shows me also the battery temperture
I hope it doesnt takes too much
Hey guys went to Best Buy today and found this charger thats made for the HP Touchpad. Made from good quality material plastics and comes with a nice 5ft micro USB cable. This charged my phone from about 15% battery to fully charged in about a hour. I only paid $14.99 CDN for it. Definately worth the money. Just wanted to let everyone here in on this find.
Also, heres a picture of it.
https://picasaweb.google.com/109115...hkey=Gv1sRgCOqir7a7jPnqFQ#5682485443037018578
aint there a 650 voltage limit for SG2?
of course it will work. Any charger that is 5V 500mA or greater will work.
The phone will only draw what it can take amperage wise. Its designed to conform with standard USB mA which is 450-500 and its also designed to work with up to 750mA of current for charging according ot the specifications of its OEM charger.
Although a 2A 5V charger works just fine. There are no gains charging with it.
The OEM charger takes roughly 1-2h to charge the device as well depending on device usage while charging.
From 100% dead last night to a full charge it was about 1.75 hours with some usage.
already an extensive thread debating this charger and the possible benefits/downfalls of using a 2A charger.
I just got my S2 5 days ago. All this time I been wondering why it takes around 5 hours to charge from 20% to 100%. At first, I been using my G2X charger, it was rated at the same 5V 1A output so I thought it wouldn't matter. Then I used the included Samsung charger with same LG cable, no difference. Now when using the Samsung cable, it only takes about 2 hours to charge from around 15% to 100%.
Is this just coincidence? Is my phone too new and just needed a few cycles? I'll test again tomorrow, or when my phone reaches below 20% with the LG cable.
There's been known issues with using chargers other than stock..mine gets stuck at 100% until I reboot if I use any charger other than the OEM that came with it.
Sent from my SGH-T989 using XDA
the OEM cable
it'll be your life line in case of emergency like this one
http://forum.xda-developers.com/showthread.php?t=1561432
From my experience you're going to always want to use the charger and cord that came with the phone. I bought my Galaxy S II off the streets and it did not come with the cord, so originally I tried using my OG Droid charger since it's micro USB too but it wouldn't even accept it at all (I'm pretty sure because it was too under-powered for the Galaxy S II (My speculation)). I tried using an older LG micro USB cable too (I think it was even older though) it didn't work either, so now I use my Vizio TAB micro USB cord which seems to work fine.
But also at my work we have a 3rd party micro usb charger too but it's universal, but if I charge my phone on there, not only does it take longer to charge it doesn't hold the battery as long.
So what I've figured out is you're gonna want to use your own charger the phone came with to achieve maximum battery life, also unplug the charger right away when it hits 100%.
shilent said:
I just got my S2 5 days ago. All this time I been wondering why it takes around 5 hours to charge from 20% to 100%. At first, I been using my G2X charger, it was rated at the same 5V 1A output so I thought it wouldn't matter. Then I used the included Samsung charger with same LG cable, no difference. Now when using the Samsung cable, it only takes about 2 hours to charge from around 15% to 100%.
Is this just coincidence? Is my phone too new and just needed a few cycles? I'll test again tomorrow, or when my phone reaches below 20% with the LG cable.
Click to expand...
Click to collapse
Wow lol I post the same thing every second day on some forum or other xD
The usb is special in the sense it has a nice rubber feel and cool plastic iphone style caps on the end..
Its a MICRO-USB male to USB male cable, nothing more, seeing as it is still a standard USB cable it has a max current of 5v (5.25 I do believe..), plugging it into a USB to AC converter over 5v can screw up the device and cable, sscond point.
Standard charger is 5v AC, using a charger below wont cause harm, but using one above can screw up your phone and battery and not ground it properly..
3rd point, keep in mind the mAh on the charger when charging, some (for like bluetooth headsets) are only 500mAh)
mAh is an acronym for ampere an hour, and in short, for chargers measures the current sent to the device at an hourly rate, for batterys (such as lithium ion) measures the actual charge capacity of the cell, using one with a higher mAh then the stock battery (1850mAh) will only charge it quicker and is recommended.
Fourth and final, remember with USB to AC adapters that some only have +5 and ground enabled (2 outer pins), ising the device its meant for on a ac adapter with all 4 pins enabled will make the device try to establish a connection and can again, make it not ground properly. I think ours has the 4 pins enabled though so ignore the last point..
*edit
Lmfao at above few posts (your theories have no basis, allow me to explain)
When you plug your charger in, regardless if its connected or not, its "live"
That being said, the every cellphone (keyword: cell) uses a lithium-ion battery,
That cell has a control board with a chip with a bit of information, some variable, the device has READ access to this board, and collects informagion such as max mAh, current mAh, and min mAh, the device then calculates from that, a percentage,
It then displays that information to the user, the minimum (displays 0-1%), is usually a value around ~100mAh if the cell dies to 0mAh, this can reset the control board and drasticly reduce the batterys expectancy and overall life.
Also, the actual chip on the phone, is simply for, when the battery is full, (current mAh meets max)
Said device drops connection to the cell and resumes on AC, leaving battery fully charged.
Unless you use a charger outside above said specifications, its literally impossible for a charger or file on said device (referring to batterystats n00bs who dont research) to adjust or recalibrate a lithium ion battery.
Hows that for a response I kept it clean
doug36 said:
Wow lol I post the same thing every second day on some forum or other xD
The usb is special in the sense it has a nice rubber feel and cool plastic iphone style caps on the end..
Its a MICRO-USB male to USB male cable, nothing more, seeing as it is still a standard USB cable it has a max current of 5v (5.25 I do believe..), plugging it into a USB to AC converter over 5v can screw up the device and cable, sscond point.
Standard charger is 5v AC, using a charger below wont cause harm, but using one above can screw up your phone and battery and not ground it properly..
3rd point, keep in mind the mAh on the charger when charging, some (for like bluetooth headsets) are only 500mAh)
mAh is an acronym for ampere an hour, and in short, for chargers measures the current sent to the device at an hourly rate, for batterys (such as lithium ion) measures the actual charge capacity of the cell, using one with a higher mAh then the stock battery (1850mAh) will only charge it quicker and is recommended.
Fourth and final, remember with USB to AC adapters that some only have +5 and ground enabled (2 outer pins), ising the device its meant for on a ac adapter with all 4 pins enabled will make the device try to establish a connection and can again, make it not ground properly. I think ours has the 4 pins enabled though so ignore the last point..
*edit
Lmfao at above few posts (your theories have no basis, allow me to explain)
When you plug your charger in, regardless if its connected or not, its "live"
That being said, the every cellphone (keyword: cell) uses a lithium-ion battery,
That cell has a control board with a chip with a bit of information, some variable, the device has READ access to this board, and collects informagion such as max mAh, current mAh, and min mAh, the device then calculates from that, a percentage,
It then displays that information to the user, the minimum (displays 0-1%), is usually a value around ~100mAh if the cell dies to 0mAh, this can reset the control board and drasticly reduce the batterys expectancy and overall life.
Also, the actual chip on the phone, is simply for, when the battery is full, (current mAh meets max)
Said device drops connection to the cell and resumes on AC, leaving battery fully charged.
Unless you use a charger outside above said specifications, its literally impossible for a charger or file on said device (referring to batterystats n00bs who dont research) to adjust or recalibrate a lithium ion battery.
Hows that for a response I kept it clean
Click to expand...
Click to collapse
That's exactly my point. Shouldn't all micro USB cables be the same? I been charging all my other smartphones with many different micro USB cables and they all charged normally. Now with this phone, it takes over 5 hours to charge with my LG branded cable, this is with the stock S2 charger. Now with the Stock S2 cable, it charges in about 2 hours.
I'm gonna have to test again with the LG cable, as others reported long charging times within the first few days.
BTW, the current rating on a charger is NOT the hourly rate (ah). Also charging a lithium ion battery at a rate of 1850mah or higher should not be recommended.
Sent from my SGH-T989 using XDA
shilent said:
That's exactly my point. Shouldn't all micro USB cables be the same? I been charging all my other smartphones with many different micro USB cables and they all charged normally. Now with this phone, it takes over 5 hours to charge with my LG branded cable, this is with the stock S2 charger. Now with the Stock S2 cable, it charges in about 2 hours.
I'm gonna have to test again with the LG cable, as others reported long charging times within the first few days.
Sent from my SGH-T989 using XDA
Click to expand...
Click to collapse
Its never gonna be a linear charge or drain.
Simply put its an OS, As all OS's they have services that can start at different points, and also open different apps, also using rhe device, applications still in the ram, connection strength will all effect this its impossible to check 2 differenf charge methods accurately enough to get a definitive answer without 2 identical systems, apps, data, kernal and all, one on top of the other, plugged in simultaneously, in sleep mode, to the same outlet :/
Haha well I may be in trouble. I use several different friends, co workers chargers everyday.
Sent from my SGH-T989 using xda premium
JaZart said:
Haha well I may be in trouble. I use several different friends, co workers chargers everyday.
Sent from my SGH-T989 using xda premium
Click to expand...
Click to collapse
I have 3 chargers I use for this and haven't had no issues, there is no way using a different charger (unless its outside above said specifications) that it can do anything to your device including screw with the charge level.. people just don't like to research.
Just an update, it took 2 hours and 25 minutes to charge my S2 from 25% to 75% using my LG cable (same stock S2 charger). I'm gonna test with my Palm micro USB cable next.
shilent said:
Just an update, it took 2 hours and 25 minutes to charge my S2 from 25% to 75% using my LG cable (same stock S2 charger). I'm gonna test with my Palm micro USB cable next.
Click to expand...
Click to collapse
One, if you want an accurate trst with one device, kill to zero percent and plug it in, eithout turning on time to 100%, run same test eith another cable
**EDIT
shilent said:
BTW, the current rating on a charger is NOT the hourly rate (ah). Also charging a lithium ion battery at a rate of 1850mah or higher should not be recommended.
Sent from my SGH-T989 using XDA
Click to expand...
Click to collapse
http://en.m.wikipedia.org/wiki/Ampere-hour
Link for you to check your **** before correcting people
Using one equal to or higher then battery capacity IS recommended..
To save you the trouble of reading **** WAY over your head:
The Faraday constant is the charge on one mole of electrons;
approximately equal to 26.8 ampere-hours. It is used in
electrochemical calculations.
An ampere-hour is not a unit of energy. In a battery system, for
example, accurate calculation of the energy delivered requires
integration of the power delivered (product of instantaneous
voltage and instantaneous current) over the discharge interval.
Generally, the battery voltage varies during discharge; an average
value may be used to approximate the integration of power. [3]
In summary, the higher the mAh, the longer the battery will last.
One, if you want an accurate trst with one device, kill to zero percent and plug it in, eithout turning on time to 100%, run same test eith another cable
**EDIT
http://en.m.wikipedia.org/wiki/Ampere-hour
Link for you to check your **** before correcting people
Using one equal to or higher then battery capacity IS recommended..
To save you the trouble of reading **** WAY over your head:
The Faraday constant is the charge on one mole electrons;
approximately equal to 26.8 ampere-hours. It is used in
electrochemical calculations
An ampere-hour is not a unit of energy. In a battery system, for
example, accurate calculation of the energy delivered requires
integration of the power delivered (product of instantaneous
voltage and instantaneous current) over the discharge interval.
Generally, the battery voltage varies during discharge; an average
value may be used to approximate the integration of power. [3]
In summary, the higher the mAh, the longer the battery will last.
For chargers, the higher mAh sends a larger current of the same voltage to the device, charging it faster, lower mAh can and will cjarge slowly.. I'm not sayin go use a 5v 50k mAh charger for the battery and charge it in a split second here.
Wtc! I hit edit! Mod plz merge these...
Charge rate of 1C = the capacity of the battery, in our case, 1C = 1850mah. It is not recommended to charge over 0.7C when it comes to lithium ion batteries. If a charge rate of 1850ma is recommended, then why do all chargers top out at 1A?
I collect high performance flashlights, most of them use lithium ion cells. I know about charging and discharging li-ion otherwise I could lose my hands.
Anyway, the point of this thread was about the stock USB cable vs other cables. The only thing I can think of at the moment is that my LG cable has more resistance than the Samsung cable, which is why it charges slower. Though that's hard to believe is the charging time is more than double.
doug36: I've seen you post in other threads, all you like to do is insult people, or at least try to. This is the last time I'm gonna post in this thread, you keep posting irrelevant information. Next, you're going to try to insult me, I'm not going to respond, and you're going to think you won or whatever, I don't care.
If anyone wants more info, or has any questions, please send me a PM.
JaZart said:
Haha well I may be in trouble. I use several different friends, co workers chargers everyday.
Sent from my SGH-T989 using xda premium
Click to expand...
Click to collapse
Eww... everyone hits and quits it? XD
I've noticed that the charger that comes with the S2 has a special hook on one side and looks distinctly different than other usb micro cables.
Personally i think it's really dumb.. wasn't the point of micro Usb to be uniform across all phones?!
Sounds like a good way for Samsung to make some extra bucks.
JhonKa said:
I've noticed that the charger that comes with the S2 has a special hook on one side and looks distinctly different than other usb micro cables.
Personally i think it's really dumb.. wasn't the point of micro Usb to be uniform across all phones?!
Sounds like a good way for Samsung to make some extra bucks.
Click to expand...
Click to collapse
I was curious about this two. What makes the included charger official...the brick or the cable out both
Sent from my SGH-T989 using xda premium
I have no idea, all I know is that i tried to use my charger for my G2X and the SGSII wouldn't go past 95% charged? I used the Samsung charger and it charges perfectly?
Well lately my stock samsung charger has been terrible.
Even when I plug it into the wall it charges so slowly that if im below 15%; it will die
When left alone or charging while off for about 45min it will have up about 2-5%; so there's a major problem here.
But using a different charger and it charges at a faster(normal pace); 5% to 65% in appox 1 hour.
JaZart said:
Well lately my stock samsung charger has been terrible.
Even when I plug it into the wall it charges so slowly that if im below 15%; it will die
When left alone or charging while off for about 45min it will have up about 2-5%; so there's a major problem here.
But using a different charger and it charges at a faster(normal pace); 5% to 65% in appox 1 hour.
Click to expand...
Click to collapse
That's normal? :O mine takes about 4 hours from red battery.
Sent from my SGH-T989 using xda premium
Has anyone noticed that if you turn the phone off..or let the battery die to 0% and then turn itself off. If you then plug it into an LG usb cable it will put the phone into download mode.
This works every single time with my g2x cable.
Sent from my SGH-T989 using Tapatalk
So, I have powerbank and I have 2 ways of charging: 1A and 2.1A. which one to use when charging my note 2?
Handwritten from my Note 2
Depends on the cable you'd use. Samsung cable will go near 2amp, generic ones do about 1 amp
kebabs said:
Depends on the cable you'd use. Samsung cable will go near 2amp, generic ones do about 1 amp
Click to expand...
Click to collapse
I have samsung cable.. So is it smart to charge via 2.1 A ? Can it do some damage on the phone ?
I have a Momax external battery and have charged the phone with the 2.1A port. It didn't heat up, it didn't have any problems. I was planning on measuring the exact amperage that comes out of the samsung charger and the momax battery (iPower Pro), but I didn't get around to it, because I suspect the difference is actually smaller. There are many people who used more powerful chargers to charge their phones faster, and the only thing that degraded was the battery lifespan, but the difference in those cases was upwards of 0.5A between the original and the new charger. I find the 0.1A to be a small difference and I have no problem using the 2.1A port on the iPower.
So to answer your question, no, it won't damage your phone. Theoretically it damages your phone's battery, but it degrades anyway due to charging cycles, so you won't notice any damage caused by the extra 0.1A unless you plan on still using the note 2 10 years from now.
sandulea said:
I have a Momax external battery and have charged the phone with the 2.1A port. It didn't heat up, it didn't have any problems. I was planning on measuring the exact amperage that comes out of the samsung charger and the momax battery (iPower Pro), but I didn't get around to it, because I suspect the difference is actually smaller. There are many people who used more powerful chargers to charge their phones faster, and the only thing that degraded was the battery lifespan, but the difference in those cases was upwards of 0.5A between the original and the new charger. I find the 0.1A to be a small difference and I have no problem using the 2.1A port on the iPower.
So to answer your question, no, it won't damage your phone. Theoretically it damages your phone's battery, but it degrades anyway due to charging cycles, so you won't notice any damage caused by the extra 0.1A unless you plan on still using the note 2 10 years from now.
Click to expand...
Click to collapse
Thanks for reply mate ! I was thinking the same, but i needed some sort of confirmation tho
Use the 2.1A one.
The phone should only draw 2A from it anyway, that just means the port is capable of supplying 2.1A.
Using the 1A port will just charge your phone slowly, the 2.1A port should charge it as quick as the official charger, depending on which cable you use.
It is a matter of supply and demand. All USB devices can safely be plugged into any USB charger. Given an unlimited amount of current available from the charger, each device will still only draw only as much current as it is designed to draw. If the charger is rated 2.1 Amps or 5 Amps or 10 Amps, a 1.5 Amp device will still only draw 1.5 Amps. The charge rate will be at maximum Think of it like your house wiring. The circuit may have a 20 Amp circuit breaker in the basement but we plug in 40 Watt bulbs and 100 Watt bulbs and TVs and electric shavers that all draw different amounts of current. The 100 Watt bulb uses less than an amp but is unharmed being plugged into a 20 Amp receptacle (charger). Now we come to the flip side. If the charger Is rated lower than the device it just charges slower than it would if the charger could supply at least as much as the device uses. To go back to our example, the 1.5 Amp device plugged into a 1 Amp charger will take longer to charge that it would with a charger rated 1.5 Amps or higher. My analogy has one hole. If the stuff plugged into the house receptacles exceeds 20 Amps the circuit breaker pops. This will not happen with USB chargers as they limit the current and will not try to supply more than they are rated for. Stick to chargers rated as high as the one that came with your device or higher and you will be fine
No
Can a qi charger charge the nexus 5 when data and GPS is being used ?
Will it charge or will the battery drain?
Sent from my Nexus 7 (2013) KitKat 4.4.2
Power consumption during data and GPS use varies depending on what apps are used, signal strength ect... so there is no definite answer. In general, I notice slight battery drain when using navigation when on wireless charging. Google's nav app uses more power than the 500 mah the Qi charger provides but the drain is much slower than on battery alone..
rikudo said:
Power consumption during data and GPS use varies depending on what apps are used, signal strength ect... so there is no definite answer. In general, I notice slight battery drain when using navigation when on wireless charging. Google's nav app uses more power than the 500 mah the Qi charger provides but the drain is much slower than on battery alone..
Click to expand...
Click to collapse
Sorry, but what Qi charger are you using that only provides 500mA?
Even my $15 generic ebay Qi charger gets 751mA.
mmmmBACON said:
Sorry, but what Qi charger are you using that only provides 500mA?
Even my $15 generic ebay Qi charger gets 751mA.
Click to expand...
Click to collapse
500 mA was an estimate, individual results vary. Take into account wireless charging has an efficiency of 70-80%, so a charger with a 751mA output would effectively charge at 600-526mA. Add a phone case and/or imperfect alignment charging efficiency drops even lower. In real world use my 750 mA qi charger charges at about the same rate as a 500 mA USB port.
rikudo said:
500 mA was an estimate, individual results vary. Take into account wireless charging has an efficiency of 70-80%, so a charger with a 751mA output would effectively charge at 600-526mA. Add a phone case and/or imperfect alignment charging efficiency drops even lower. In real world use my 750 mA qi charger charges at about the same rate as a 500 mA USB port.
Click to expand...
Click to collapse
Oh yeah, I took that into consideration already, which is why I gave such an exact number. I got 751mA from a 5V/1A output rated Qi charger.
I've done a bunch of tests of charge rates with stock, higher amp chargers, and my generic Qi charger.
http://forum.xda-developers.com/showpost.php?p=48856141&postcount=18
As long as the Qi charger you buy is rated as 5V/1A output (which is almost all of them out there, including the official nexus wireless charger, tylt vu, etc.), you should get around the charge rate I mentioned if it's maxed out fully. So people buying the expensive Qi chargers, are not getting any speed improvement over the cheap one I bought. Might look a little nicer sure, but I'll gladly keep the $20 - $50 in my pocket instead. If you want to read my whole post, I linked it.
Here's just the data portion.
Stock 1.2A LG wall adapter: 1053mA
2A USB wall adapter: 1053mA
Built in USB input on power bar: 1053mA
USB 3.0 port (desktop computer): 446mA (surprised it was so low for a USB 3.0 charge port)
USB 2.0 port (desktop computer): 334mA
Generic Qi charger (2A input/1A output)/Built in USB input on power bar: 751mA
Generic Qi charger/Stock LG adapter: 751mA
Generic Qi charger/2A USB adapter: 751mA
Generic Qi charger/USB 3.0 port: 696mA (interesting compared to directly plugging into USB 3.0)
Generic Qi charger/USB 2.0 port: 502mA (low, but again higher than direct cable)
Click to expand...
Click to collapse
That's why I was just wondering what Qi charger you had and why you were saying 500mA because that is less than half the charge rate of the stock wall charger.
mmmmBACON said:
Oh yeah, I took that into consideration already, which is why I gave such an exact number. I got 751mA from a 5V/1A output rated Qi charger.
I've done a bunch of tests of charge rates with stock, higher amp chargers, and my generic Qi charger.
http://forum.xda-developers.com/showpost.php?p=48856141&postcount=18
As long as the Qi charger you buy is rated as 5V/1A output (which is almost all of them out there, including the official nexus wireless charger, tylt vu, etc.), you should get around the charge rate I mentioned if it's maxed out fully. So people buying the expensive Qi chargers, are not getting any speed improvement over the cheap one I bought. Might look a little nicer sure, but I'll gladly keep the $20 - $50 in my pocket instead. If you want to read my whole post, I linked it.
Here's just the data portion.
That's why I was just wondering what Qi charger you had and why you were saying 500mA because that is less than half the charge rate of the stock wall charger.
Click to expand...
Click to collapse
This is strange, I used the "Current Widget" app as well. . I'm currently using an Anker Powerbank, it's a 6000 mAh battery with a built in Qi charger which shows an average 500 mA charge rate. I also have an official Nexus 5 Qi charger that also shows about 500 mA charge rate. When connected directly to the Nexus qi charger wall adaptor I get a 1560 mA charge rate. Thanks for your data, this makes me wonder how accurate "Current Widget" app actually is since our results differ so much.
rikudo said:
This is strange, I used the "Current Widget" app as well. . I'm currently using an Anker Powerbank, it's a 6000 mAh battery with a built in Qi charger which shows an average 500 mA charge rate. I also have an official Nexus 5 Qi charger that also shows about 500 mA charge rate. When connected directly to the Nexus qi charger wall adaptor I get a 1560 mA charge rate. Thanks for your data, this makes me wonder how accurate "Current Widget" app actually is since our results differ so much.
Click to expand...
Click to collapse
Yeah, I used CurrentWidget as well, it's a pretty close estimate, but it won't be 100% accurate. I just didn't want to tear things apart and use a multimeter to take readings. Make sure your CurrentWidget update interval is set to 1 so it gives you live updates. Then you just have to give it a few minutes to stabilize (it will always fluctuate though) and watch for the consistent highest reading over a period of 5 to 10 minutes to be as accurate as you can. For my readings, 751mA kept popping up over and over again but never higher, so it was reasonable to say that was the max my Qi charger was capable as long as it was receiving ample power itself.
The charge rate will also vary depending on where in the battery charge cycle you are recording. At the beginning and end of the charge cycle, it will not charge at full speed and will slow down the charge. This is to protect the phone and the battery. For best range of recording, try to take your readings when your battery is charging around the 25 - 65% full mark, that way you can be pretty confident that your phone/battery is allowing the charger to charge at full speed.
What is your Anker Powerbank output rated as?
Also, was that 1560mA a consistent reading, or just a spike?
Most likely it'll go down if the screen is on, if the screen is off, it may stay or go up extremely slow.
Thanks for the replies.
If the charge will go down when screen, data and GPS are on.. Then it's not really a suitable for a sat naval replacement.
Looks like I'll need to go with a cable.
Sent from my Nexus 7 (2013) KitKat 4.4.2
Look at those car cable mods, they'll meet your needs and will give you an idea on how to hide the cables
Sent from my SM-N9005 using Tapatalk
The qi chargers I tried in the car slowly drain the battery with navigation and streaming music. Do I went back to the cord in the car.
Sent from my Nexus 5 using Tapatalk 2
Don't forget with GPS and other things on your temperature will go pretty high and could reach 45C where wireless charging practically turns off and your charger will only try and maintain the current battery percent. At least this happens to me monitoring it using battery widget.
Sent from my Nexus 5 using Tapatalk
I haven't gone so far as to install current widget, out even better battery stats, but I have taken some long trips with navigation and music streaming, screen on the whole time, and with the cheap Chinese 'c1' car mount, I always arrive with more charge than I left with. Maybe this is because I live in a cold climate, and the charger does not stop because of excessive heat.
Sent from my Nexus 5 using Tapatalk
mmmmBACON said:
Yeah, I used CurrentWidget as well, it's a pretty close estimate, but it won't be 100% accurate. I just didn't want to tear things apart and use a multimeter to take readings. Make sure your CurrentWidget update interval is set to 1 so it gives you live updates. Then you just have to give it a few minutes to stabilize (it will always fluctuate though) and watch for the consistent highest reading over a period of 5 to 10 minutes to be as accurate as you can. For my readings, 751mA kept popping up over and over again but never higher, so it was reasonable to say that was the max my Qi charger was capable as long as it was receiving ample power itself.
The charge rate will also vary depending on where in the battery charge cycle you are recording. At the beginning and end of the charge cycle, it will not charge at full speed and will slow down the charge. This is to protect the phone and the battery. For best range of recording, try to take your readings when your battery is charging around the 25 - 65% full mark, that way you can be pretty confident that your phone/battery is allowing the charger to charge at full speed.
What is your Anker Powerbank output rated as?
Also, was that 1560mA a consistent reading, or just a spike?
Click to expand...
Click to collapse
The Powerbank Qi output is rated at 500 mA. The 1.8A wall adaptor gives a fairly consistent reading above 1500 mA.
I set faster update interval and found the following averages. (Battery @ 50%)
Nexus Qi 1.8A wall adapter: 1500-1605 mA
Nexus 5 stock wall adapter: 900-1000 mA
Nexus Qi charger plate: 450-740 mA
Qi Powerbank 500 mA: 300-476 mA
PC 2A USB port: 550-750 mA
It seems the Current Widget rates the summarized magnitude of draw from the battery. For example having the screen on and higher brightness will subtract from the measured charge. To negate this I placed the phone in airplane mode, screen off and set sampling to 5 s. Then after 10 s turned the phone on to view the last sample taken with the screen off.
Looks like you were right, a 750 mA rated charger factors in transmission losses. The Official Nexus Qi plate puts out 750 mA max. The Powerbank puts out 500 mA as labeled. The 1.8A wall adapter was surprising though. Anand's article stated the max charge rate was 1.2A but the 1.8A adapter clearly exceeds this rate.
rikudo said:
The Powerbank Qi output is rated at 500 mA. The 1.8A wall adaptor gives a fairly consistent reading above 1500 mA.
I set faster update interval and found the following averages. (Battery @ 50%)
Nexus Qi 1.8A wall adapter: 1500-1605 mA
Nexus 5 stock wall adapter: 900-1000 mA
Nexus Qi charger plate: 450-740 mA
Qi Powerbank 500 mA: 300-476 mA
PC 2A USB port: 550-750 mA
It seems the Current Widget rates the summarized magnitude of draw from the battery. For example having the screen on and higher brightness will subtract from the measured charge. To negate this I placed the phone in airplane mode, screen off and set sampling to 5 s. Then after 10 s turned the phone on to view the last sample taken with the screen off.
Looks like you were right, a 750 mA rated charger factors in transmission losses. The Official Nexus Qi plate puts out 750 mA max. The Powerbank puts out 500 mA as labeled. The 1.8A wall adapter was surprising though. Anand's article stated the max charge rate was 1.2A but the 1.8A adapter clearly exceeds this rate.
Click to expand...
Click to collapse
That is interesting. My finding mirrored that of Anandtech. I used both the 1.2A stock adapter, and a 2A adapter and I was not able to increase my charging speed at all. It stayed at 1053.
Can you check the plug to see the voltage of the Nexus 5 Qi adapter. Is it 5V?