So i got an MHL cable to connect my 1X to my tv to play snes games with a bluetooth controller
It works fine, plus it looks great... BUT!
The phone says it's charging.. little red light, battery info says charging, but it looses charge as i use it.
Just finished playing a snes emulator for 30 mins. I had the phone in airplane mode, plus the screen brightness on the lowest setting.
After 30 mins it went from 85% to 72%!! plus it was really warn/hot.
Is this normal? Is it because the screen is still on on the 1X?
Does the media link thingy work better? does the screen turn off on the phone when using that?
Anyone else got an MHL cable? does your phone loose charge while using it?
Under heavy use, charging in USB mode (500mA limit) will usually still see the battery level decrease. Are you putting the auxiliary charger off a USB out from your TV/console? If so this will be the case.
I have only given my MHL adapter a quick try. Not really used it in anger yet. Can't say for sure what would happen if you used a wall charger instead of a USB one. No doubt the charge wouldn't drop, but would want to keep a very close eye on the temperature!
Are you rooted?
i think the mhl adapters (mine at least) has a maximum output, to the phone, of 500ma.
This means even if you plugin a wall charger @ 1A, then it will still only provide the phone 500ma of power max.
The rest of the power goes to actually powering the cable itself, in order to get the picture on the tv.
the reason it drains, is because the consumption of the screen/cpu is greater than the 500ma of power that the mhl adapter is providing.
Thanks for the reply.
My phone is not rooted. It's just a standard out of the box 1X.
Also, when using the MHL cable the phone was plugged into the mains charger & was still loosing charge! plus it was very warm..
Maybe i'll try to find some info about those charging dock/cradle things with the HDMI out. Maybe that be better???
lawrence750 said:
i think the mhl adapters (mine at least) has a maximum output, to the phone, of 500ma.
This means even if you plugin a wall charger @ 1A, then it will still only provide the phone 500ma of power max.
The rest of the power goes to actually powering the cable itself, in order to get the picture on the tv.
the reason it drains, is because the consumption of the screen/cpu is greater than the 500ma of power that the mhl adapter is providing.
Click to expand...
Click to collapse
Ah, ok.. that makes sense really.
I did think maybe there was more power being used than coming in... shame you can't turn the screen off on the 1X.
I think you have already done the sensible thing of trying airplane mode and min screen brightness. If it still heats up doing that on USB charging, then it's unlikely a different dock/adapter would see a reduction in drain & heat. I'd save your money there.
I only asked about root in case you could try Core Control to reduce heating, but never mind there.
Only thing I found that kept my phone cool when charging under heavy use (before I rooted it), was making sure I took the case off and I rest it on a granite drinks coaster I have! Draws the heat out of the phone very efficiently!
Related
Just been on a long run and used the satnav ( google ), and the whole time it was plugged into the cigarette lighter charger.
Despite this, the battery level was running down
Is this normal - that the battery drain using the satnav/gps is greater than the charging rate?
I used mine yesterday for about a 1/2 hr journey, was not plugged in, but batterey was down to about 30%, also seemd to use about 20mb for 15 miles, so watch your usage.
J-Zeus said:
Just been on a long run and used the satnav ( google ), and the whole time it was plugged into the cigarette lighter charger.
Despite this, the battery level was running down
Is this normal - that the battery drain using the satnav/gps is greater than the charging rate?
Click to expand...
Click to collapse
Its been discussed already, your charger is not powerful enough to charge it when using satnav, so the end result is that your charger is just slowing down the discharge. Happens when you are using 3rd party accessories.
Ah - That makes sense -- where can I get a decent one - at a decent price
I'm using the factory supplied lead and still get the same, also used to be a problem with my Touch Diamond 2 WinMo Phone, was hoping Desire would be better and it is... just... If I make sure it is fully charged before I set off I can do about 3 hours with it plugged in before it goes flat, I just keep switching it off while I know where I'm going and only switching it on when I don't! That way you can make it last until it is needed.
Another thing to check is that it is kept cool enough to charge, again, in common with my older HTC winmo phone, the Desire gets very hot while being used for GPS and this can be worse if it is in sunlight on your windscreen, sometimes this can stop it charging at all, (you can tell its in this state because the indicator light blinks alternately orange and green) I angle a vent so its blowing cold air on the phone and that seems to do the trick.
Weird thing with the Desire is that for me it shows the green charge light and battery full indicator right up till it is nearly dead... rather than showing that it is draining
I've also noticed with the Desire that even If I'm just browsing the web it drains quicker than it can charge, even using mains charger, I often get a message "the current is insufficient, please connect to AC" or something like that (when it is already plugged in)
I don't think the in car charger you use would make a big difference, the current/voltage for your cigarette lighter socket is limited by the vehicle electrics (I know mine is fused at 15 amps)
Pauly
You need a charger which supplies 1A. Most 12v cigarette lighter chargers only supply 500mA
I use this one, and plug the USB cable into the "quick charge 1A" socket
http://www.argos.co.uk/static/Product/partNumber/5140927/Trail/searchtext>BELKIN+CHARGER.htm
Are you using Bruts worldwide maps mod? I just installed it. I ran it for literally only 5 minutes, but my phone got really hot and the battery monitor shows the app used 10% of the charge (the phone has been unplugged for 24 hours). I have a strong suspicion that this app is faulty.
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Sent via the XDA Tapatalk App
This has been discussed and solved here http://forum.xda-developers.com/showthread.php?t=670702
Basically most usb car chargers (even 1a rated ones) are recognised by your phone as a data connection and to protet delicate computer usb circuits will only draw 500mAh where your phone requires 950mAh.
An easy mod of either the charger or a data cable will solve the problem. Your charger MUST be able to supply up to 1a.
zzleezz said:
This has been discussed and solved here http://forum.xda-developers.com/showthread.php?t=670702
Basically most usb car chargers (even 1a rated ones) are recognised by your phone as a data connection and to protet delicate computer usb circuits will only draw 500mAh where your phone requires 950mAh.
An easy mod of either the charger or a data cable will solve the problem. Your charger MUST be able to supply up to 1a.
Click to expand...
Click to collapse
Thats why I use the Belkin one, it detects it as a charger only and charges at full rate when plugged into the 1A socket.
I've noticed this happening any time I tether via USB or use GPS navigation while plugged in. Even though I'm connected and charging, I slowly but surely discharge. This weekend I used Google Nav for 2 hours and lost 20% of my battery while charging! On Juice Plotter, I notice the green charging glow at the bottom is a more transparent shade of green (as opposed to solid green when solely charging). Any ideas what causes this or how to avoid it? It seems to be recent.
TheBiles said:
I've noticed this happening any time I tether via USB or use GPS navigation while plugged in. Even though I'm connected and charging, I slowly but surely discharge. This weekend I used Google Nav for 2 hours and lost 20% of my battery while charging! On Juice Plotter, I notice the green charging glow at the bottom is a more transparent shade of green (as opposed to solid green when solely charging). Any ideas what causes this or how to avoid it? It seems to be recent.
Click to expand...
Click to collapse
Let me guess, you're charging off a USB port in your laptop, or using the data cable that came with the phone in your car charger?
Not all USB sources (or cables, for that matter) are created equally. Most PC/laptop ports put out 500mAh, half of what the Evo is designed to take (the factory AC adapter, the wall plug, is 1000mAh, aka 1amp).
Since it's only getting half the draw it can't quite keep up with how much power you're sucking away from the battery. This is usually only present when using the device heavily, such as with the screen on and GPS or WiFi/3G actively running.
The charging indicator (at least on Sense) indicates if it's getting the full "AC" charge (1amp) or if it's getting a reduced current charge. Sounds like that's what you're noticing.
My wife's Samsung Moment charger is 700mAh/0.7amp, and it can keep my Evo steady during use (it's powering it for 3G+WiFi tether right now), but it doesn't really charge fast at all, basically it just keeps it from depleting.
I've been meaning to try one of the USB Y-cables that join 2 standard USB ports to one female port for combined power of 1amp, but I'm not sure it will work as I hope. Anyway, I'll report back if I get around to it.
Otherwise, use an actual 1amp AC adapter whenever possible. Shop on eBay, chargers are stupid cheap. Just look for one that says it can do 1amp/1000mAh. If you're using the phone at work and want to have a convenient charging source, get one of the $20 docking cradles with an AC adapter on eBay. If it's in your car, any 12v USB charger should work, as long as you use a proper pass-through charging micro USB cable and not a "data cable". There's a slight difference in how the pins are wired inside. The Rocket Fish brand of micro USB cables are known to work (that's how I charge mine at full power in my car).
Way to go GT. Are you a student? I'm an ME phd student.
Sent from my PC36100 using XDA App
sprocket87 said:
Let me guess, you're charging off a USB port in your laptop, or using the data cable that came with the phone in your car charger?
Not all USB sources (or cables, for that matter) are created equally. Most PC/laptop ports put out 500mAh, half of what the Evo is designed to take (the factory AC adapter, the wall plug, is 1000mAh, aka 1amp).
Since it's only getting half the draw it can't quite keep up with how much power you're sucking away from the battery. This is usually only present when using the device heavily, such as with the screen on and GPS or WiFi/3G actively running.
The charging indicator (at least on Sense) indicates if it's getting the full "AC" charge (1amp) or if it's getting a reduced current charge. Sounds like that's what you're noticing.
My wife's Samsung Moment charger is 700mAh/0.7amp, and it can keep my Evo steady during use (it's powering it for 3G+WiFi tether right now), but it doesn't really charge fast at all, basically it just keeps it from depleting.
I've been meaning to try one of the USB Y-cables that join 2 standard USB ports to one female port for combined power of 1amp, but I'm not sure it will work as I hope. Anyway, I'll report back if I get around to it.
Otherwise, use an actual 1amp AC adapter whenever possible. Shop on eBay, chargers are stupid cheap. Just look for one that says it can do 1amp/1000mAh. If you're using the phone at work and want to have a convenient charging source, get one of the $20 docking cradles with an AC adapter on eBay. If it's in your car, any 12v USB charger should work, as long as you use a proper pass-through charging micro USB cable and not a "data cable". There's a slight difference in how the pins are wired inside. The Rocket Fish brand of micro USB cables are known to work (that's how I charge mine at full power in my car).
Click to expand...
Click to collapse
I'm using the included charging cable. Doesn't that have full capacity? I also use a standard USB adapter in the car. It seems like that would be able to output the correct amount of volts.
gtkansan said:
Way to go GT. Are you a student? I'm an ME phd student.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
3rd year CmpE.
I had the same problem until I noticed how hot my phone was using the nav. 13 hour drive. I purchased a vent cradle for the car and so that it can stay cool while in use and charging. While the other guy may be right theoretically, its not right practically. The evo will shut off its mini usb hub once it starts getting dangerously hot so that it won't damage your phone. Long story short make sure your phone is at safe temps no need to buy another charger for your evo. keep at cool temps so that phone won't cut off power supply will even shut your phone down if its way to hot, happened to me in atlanta not fun.
"Insert Fancy Quote"
TheBiles said:
I'm using the included charging cable. Doesn't that have full capacity? I also use a standard USB adapter in the car. It seems like that would be able to output the correct amount of volts.
Click to expand...
Click to collapse
When you say "included charging cable" do you mean the wall plug that came with the Evo or just the cable with a USB connector on one end and a micro USB on the other end? Because THAT cable is pinned as a data transfer cable and designed to relay only half voltage no matter what you plug it into. I know, because it only charged my Evo at slow speed when plugged into my USB car charger. Once I replaced it with the Rocket Fish cable it charged at full speed.
kwilbur3 said:
I had the same problem until I noticed how hot my phone was using the nav. 13 hour drive. I purchased a vent cradle for the car and so that it can stay cool while in use and charging. While the other guy may be right theoretically, its not right practically. The evo will shut off its mini usb hub once it starts getting dangerously hot so that it won't damage your phone. Long story short make sure your phone is at safe temps no need to buy another charger for your evo. keep at cool temps so that phone won't cut off power supply will even shut your phone down if its way to hot, happened to me in atlanta not fun.
"Insert Fancy Quote"
Click to expand...
Click to collapse
See above. While I agree that heat will kill the battery and possibly trigger a shutoff, I don't think that's his problem. If you use the wrong cable or charger you will only get half charging current.
sprocket87 said:
When you say "included charging cable" do you mean the wall plug that came with the Evo or just the cable with a USB connector on one end and a micro USB on the other end? Because THAT cable is pinned as a data transfer cable and designed to relay only half voltage no matter what you plug it into. I know, because it only charged my Evo at slow speed when plugged into my USB car charger. Once I replaced it with the Rocket Fish cable it charged at full speed.
See above. While I agree that heat will kill the battery and possibly trigger a shutoff, I don't think that's his problem. If you use the wrong cable or charger you will only get half charging current.
Click to expand...
Click to collapse
I mean the USB cable that comes in the box with the EVO that plugs into the AC adapter. Maybe I will look into a new cable then. Hmm.
Edit: Those Rocketfish cables that you mentioned seem to be ungodly expensive. No way in hell am I going to pay more than $5 for a USB cable. Any alternatives?
TheBiles said:
I mean the USB cable that comes in the box with the EVO that plugs into the AC adapter. Maybe I will look into a new cable then. Hmm.
Edit: Those Rocketfish cables that you mentioned seem to be ungodly expensive. No way in hell am I going to pay more than $5 for a USB cable. Any alternatives?
Click to expand...
Click to collapse
This is the one I got: http://cgi.ebay.com/ROCKETFISH-MOBI...ARGING-CABLE-/350384355972?pt=PDA_Accessories
$3 shipped
And there are 2 USB cables that came with the Evo (mine anyway), a thick one that was bundled with the wall charger and a thin one that's intended just for data sync. The thin one doesn't seem to charge at full speed.
If you're using the other one and it's STILL draining then maybe there is an issue with heat or something, like the other guy said. Is the phone SUPER hot at the base, where the kickstand is, when this happens?
OP - I am having the same problem. I'm 95% sure it's caused by something wrong in CM6 regarding how it handles USB charging. Past few nightlies I have been leaving my phone on the charger doing NOTHING overnight and it goes dead.
This CANNOT be due to lack of charging strength:
#1 the same exact charger worked perfectly in the past, before I flashed a certain nightly - not sure which one exactly it started in
#2 if it was charging, but slowly why in the world would the battery drain when I have it underclocked to 245 mhz and the phone is sleeping with screen off?
On my standard charger that came with the phone it is working fine even though it's a USB that plugs into an adapter - not sure why this doesn't work with my other one that I had from another phone since it worked perfectly before. Something is definitely odd with CM6 and USB charging.
sprocket87 said:
This is the one I got: http://cgi.ebay.com/ROCKETFISH-MOBI...ARGING-CABLE-/350384355972?pt=PDA_Accessories
$3 shipped
And there are 2 USB cables that came with the Evo (mine anyway), a thick one that was bundled with the wall charger and a thin one that's intended just for data sync. The thin one doesn't seem to charge at full speed.
If you're using the other one and it's STILL draining then maybe there is an issue with heat or something, like the other guy said. Is the phone SUPER hot at the base, where the kickstand is, when this happens?
Click to expand...
Click to collapse
That's odd, because my EVO only came with the one cable for the adapter. Phone stays cool.
berardi said:
OP - I am having the same problem. I'm 95% sure it's caused by something wrong in CM6 regarding how it handles USB charging. Past few nightlies I have been leaving my phone on the charger doing NOTHING overnight and it goes dead.
This CANNOT be due to lack of charging strength:
#1 the same exact charger worked perfectly in the past, before I flashed a certain nightly - not sure which one exactly it started in
#2 if it was charging, but slowly why in the world would the battery drain when I have it underclocked to 245 mhz and the phone is sleeping with screen off?
On my standard charger that came with the phone it is working fine even though it's a USB that plugs into an adapter - not sure why this doesn't work with my other one that I had from another phone since it worked perfectly before. Something is definitely odd with CM6 and USB charging.
Click to expand...
Click to collapse
I've also noticed lately that my phone will charge insanely fast. Like from 30% to 90% in half an hour.
Sprocket - stupid question here... do these Rocket Fish charging cables also handle data transfer just as well as the stock micro-usb cable that came with the phone or would someone want to have one JUST for charging and keep their stock cable for data transfer purposes?
TheBiles said:
That's odd, because my EVO only came with the one cable for the adapter. Phone stays cool.
I've also noticed lately that my phone will charge insanely fast. Like from 30% to 90% in half an hour.
Click to expand...
Click to collapse
Sorry I was unclear - the other cable I have that is the problem is one from another phone but the same type, and up until recently it worked perfectly.
Hi guys,
I have a simple MHL connector (ie splits into power & hdmi), to hookup the phone to the big screen. It looks pretty decent, but even when connected to mains, (which it must have otherwise hdmi doesnt work), it loses charge while playing video.
I have tried several players (dice / mx).. all play well, but phone cant keep up with charging & playing at same time..
Am doing some tests to see how bad it draws. When I go into system details, phone shows it is charging via mains.. but it appears it cant put out enough current to charge and play..
Would make a LOT of sense to me that the LCD screen (which draws about 70% of the power) actually switched off during playback via HDMI.
anyone know if this is possible or if they can charge & play a video at the same time..
I seem to be losing about 1% battery every 2 mins.
Can someone else test so i can know if It is just a dodgy MHL I have or if they are all like this. Have tried both SD & HD video.. all quite similar results.
be aware
Use the original charger or one with 5v 1a otherwise your phone won't get enough power for example I know a BlackBerry charger has a lower output
Crabitpig said:
Use the original charger or one with 5v 1a otherwise your phone won't get enough power for example I know a BlackBerry charger has a lower output
Click to expand...
Click to collapse
This was with the original charger unfortunately.
This is the same issue why I wrote that One X is unusable for in-car navigation. Basicaly what happens when under load (navigation, playing a movie, playing a game) is that battery gets into "Overheat" state (you can see this in OS Monitor for example) and stops charging.
My test for car navigation shows that power is drained by 25%/hour when plugged in and Sygic is running. Battery is in overheat state most of the time. This happens at about 50 deg.C if I remember correctly - this looks a little low so maybe they'll tweak it a little, but it doesn't solve the underlying problem really, just delays it...
So I blame crappy heatsink construction or overral internal design, this should not happen under any circumstances (and my iPhone is a marvellous example that it can be done - it is able to navigate and charge at the same time, and gets into overheat only when car ventilation is turned off and sun is shining on its' black body - my One X is white and overheats no matter what I do).
This will sooner or later be the reason why people will start returning their phones en masse...
Get 2 amps charger from eBay, see if it helps. I do have one, but only use it when I really need a quick charge in very shor time. Not advised to use as primary charger, but for powering both: phone and MHL at the same time, it might just do the trick.
schriss said:
Get 2 amps charger from eBay, see if it helps. I do have one, but only use it when I really need a quick charge in very shor time. Not advised to use as primary charger, but for powering both: phone and MHL at the same time, it might just do the trick.
Click to expand...
Click to collapse
I tried this, doesn't work. The problem is not insufficient current, it's overheating.
schriss said:
Get 2 amps charger from eBay, see if it helps. I do have one, but only use it when I really need a quick charge in very shor time. Not advised to use as primary charger, but for powering both: phone and MHL at the same time, it might just do the trick.
Click to expand...
Click to collapse
zvieratko said:
I tried this, doesn't work. The problem is not insufficient current, it's overheating.
Click to expand...
Click to collapse
2a won't work as the phone is limited to 1a
If the battery temp is 48 or over it goes in to overheat state green and red notification.
If you are rooted you could disable two cores see if that helps.
Sent from my HTC One X using xda premium
This same issue came up in the Nexus forums a while back. Evidently, AC charging requires that the USB data lines to be either shorted or have a resistor across them (forget which one). Since MHL is using those USB data lines for video, they cannot be used to signal AC charging capability, so you're stuck with the max USB draw of 500ma. That's way less than the amount of juice you're using, so you end up running the battery down. You should be able to confirm that by noting the charging mode displayed while using MHL.
Sent from my Galaxy Nexus using xda premium
I'm getting rapid battery drain issues while using MHL adapter. I'm still trouble shooting, but have to experiment more. In the mean time, I was thinking maybe someone may have some suggestions.
I just transition from the HTV Evo 4G. Great phone, but it's showing its age. I have a job with a lot of dead time. With the Evo, and Cyangenmod, I would mirror the phone onto a 16" HDTV and watch Netflix, Hulu, NFL, Crackle, Plex, play games and so forth. I would also WiFi tether so I could use my tablet to do email, web browser, IM and so forth. I had the phone over clocked and used the performance gov. If had the phone connect to a charger, it would actually charge, albeit slowly back up to a fully charge This is with the screen that new shut off while pausing a media, but set to the lowest brightness.
The GN2, nowhere near the performance. If I WiFi tether and stream some media and mirror to the TV via the MHL adapter, I loose around 20% battery.per hour. I have power save on. I use my tablets power adapter with outputs 2.1mah instead of the 1 like the one that comes with GN2. I still have the screen set to lowest brightness.
From the settings menu for battery, the screen takes up the most juice. This is expected. But I also streamed content on phone while charging and it did build up a charge, albeit very slow.
I'm thinking it may be the MHL adapter itselt. I have the have USB charger connected to work. It's possible the phone doesn't put out enough power to work the MHL adapter. I'm not certain, but it's possible the MHL adapter is only doing a trickle charge. I had it plugged in, but phone screen off, and looks like it draining the battery. I want to run a longer test to confirm.
I purchase a cheap MHL from monoprice. I had to get the 11pin to 5pin adapter to use it. I'm not sure it is the MHL or the adapter that may cause issues.
In the mean time, I changed the kernals to Persus. Hoping to get better performance, or higher charging capablities. It's improved slightly, maybe 18% drain per hour. I'm just using CPU Mater, free version. I upped the CPU to 1.8ghz, but the free version does include anything for the battery. I don't really want to spend the $3 on SetCPU because I don't know if there gov has a lot towards the battery charging mods.
Any ideas or suggestions?
lovekeiiy said:
I'm getting rapid battery drain issues while using MHL adapter. I'm still trouble shooting, but have to experiment more. In the mean time, I was thinking maybe someone may have some suggestions.
I just transition from the HTV Evo 4G. Great phone, but it's showing its age. I have a job with a lot of dead time. With the Evo, and Cyangenmod, I would mirror the phone onto a 16" HDTV and watch Netflix, Hulu, NFL, Crackle, Plex, play games and so forth. I would also WiFi tether so I could use my tablet to do email, web browser, IM and so forth. I had the phone over clocked and used the performance gov. If had the phone connect to a charger, it would actually charge, albeit slowly back up to a fully charge This is with the screen that new shut off while pausing a media, but set to the lowest brightness.
The GN2, nowhere near the performance. If I WiFi tether and stream some media and mirror to the TV via the MHL adapter, I loose around 20% battery.per hour. I have power save on. I use my tablets power adapter with outputs 2.1mah instead of the 1 like the one that comes with GN2. I still have the screen set to lowest brightness.
From the settings menu for battery, the screen takes up the most juice. This is expected. But I also streamed content on phone while charging and it did build up a charge, albeit very slow.
I'm thinking it may be the MHL adapter itselt. I have the have USB charger connected to work. It's possible the phone doesn't put out enough power to work the MHL adapter. I'm not certain, but it's possible the MHL adapter is only doing a trickle charge. I had it plugged in, but phone screen off, and looks like it draining the battery. I want to run a longer test to confirm.
I purchase a cheap MHL from monoprice. I had to get the 11pin to 5pin adapter to use it. I'm not sure it is the MHL or the adapter that may cause issues.
In the mean time, I changed the kernals to Persus. Hoping to get better performance, or higher charging capablities. It's improved slightly, maybe 18% drain per hour. I'm just using CPU Mater, free version. I upped the CPU to 1.8ghz, but the free version does include anything for the battery. I don't really want to spend the $3 on SetCPU because I don't know if there gov has a lot towards the battery charging mods.
Any ideas or suggestions?
Click to expand...
Click to collapse
A. you are wrong, the charger that comes with our phone is 2 amps.
B. make sure you use the cable that came with the phone as it is rated for 2 amps, other cables will have too much resistance
C. it is normal for the mhl adapter to eat through your battery, maybe not as much as you are saying, but this phone uses the 11 pin mhl adapter which allows for FULL hd unlike older mhls/microhdmi ports so it is bound to murder your battery
D. I don't recommend you wirelessly tethering at the same time, my phone will eat through my battery like crazy with the screen turned off while tethering to play online games... this might be the root of your problem
Sent from my SPH-L900 using xda app-developers app
I think you're right on the cable. I tried it at home, using the charger and cable that came with the phone. Did an hour of Netflix, WiFi tethered the tablet. Battery drain...1%
I'll guess I need to get new USB cables since I like to keep extras in various locations, LOL.
Also, I miss read the chrager. I shouldn't read when I'm too tired. The good news, my tablets 2.1A charger should be only a very low risk of too much power. I was concerned with it, when I thought the charger was 1A
I realize what I'm doing is power drain, but it should be doable is the phone is on a charger. I'm not necessarily expecting it to charge back up, but I figure in the six to seven hours, a reasonable drain on the charger should be maybe 30%. This is only an assumption since I don't know how much the screen drains the battery.
lovekeiiy said:
I think you're right on the cable. I tried it at home, using the charger and cable that came with the phone. Did an hour of Netflix, WiFi tethered the tablet. Battery drain...1%
I'll guess I need to get new USB cables since I like to keep extras in various locations, LOL.
Also, I miss read the chrager. I shouldn't read when I'm too tired. The good news, my tablets 2.1A charger should be only a very low risk of too much power. I was concerned with it, when I thought the charger was 1A
I realize what I'm doing is power drain, but it should be doable is the phone is on a charger. I'm not necessarily expecting it to charge back up, but I figure in the six to seven hours, a reasonable drain on the charger should be maybe 30%. This is only an assumption since I don't know how much the screen drains the battery.
Click to expand...
Click to collapse
there is no risk of overcharging from amperage, the phone will take what it wants and not use the rest... you could have a 500 amp charger yet our phone would only use the 2 amps it's rated for. The problem comes from voltage if you have to much voltage then you overcharge.
you also fail to realize that the phone takes a lot of juice to convert it's image into a standard hdmi signal, it's the difference between you talking to yourself and you trying to make someone else understand you... the processor has to act as a graphics card, a sound card and its usual processing needs... the epic 4g touch ate just as much power per hour while on mhl yet it was only outputting 16:9 480p
as for getting more cables be careful and ensure they can handle the 2 amp drop
Sent from my SPH-L900 using xda app-developers app
Well, it seemed the biggest culprit was not the cable, but the charger. I actually brought the Samsung charger to work. I was only getting around 2% to 5% battery drain per hour. It was really low.
Unfortunately my ignorence on electricity is showing. I'm not seeing why such a dramatic difference between the Samsung and ASUS (TF700T tablet) chargers. Their readings are similar but not exact:
ASUS: Input: 100-240V 50/60Hz 0.5A, Output: 5V==2A or 15V==1.2A
Samsung: Input 100-240V 50/60Hz 0.35A, Output 5V ==2.0A
As for cables, I'm not sure where I can go to find good USB cables that work as well or better than the one that came with the phone. Usually I just go to monoprice, but that's where I got my other cables.
BlackBerry cables r usually more beefy than others since they are rated for data transfer. whenever flashing through Odin that's what I use never had a problem. assuming it's the same for charging. they usually only run like 5 bucks too
Sent from my SPH-L900 using xda app-developers app
goodpup420 said:
BlackBerry cables r usually more beefy than others since they are rated for data transfer. whenever flashing through Odin that's what I use never had a problem. assuming it's the same for charging. they usually only run like 5 bucks too
Sent from my SPH-L900 using xda app-developers app
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they might be beefy, but still have ****ty materials. it all depends on the impedance of the cable... if you have a multimeter check the resistance on the cables and compare them to the stock
Sent from my SPH-L900 using xda app-developers app
A few years ago, I installed a Verizon Samsung Tab 2 in the dash of my Cadillac. I have this tied into the sound system and use it mostly for streaming music and google maps. I had it set up so that the power (cigarette adapter) would shut off whenever the car turned off. Then I used the Tasker app to detect when the tablet was not getting power and put the tablet into Airplane mode, turn the screen off, and pause any music. This would cause it to conserve enough power that it could last a long time until I started the car again. (I cannot reach the tablet's power button once it's installed in the dash). This worked fine for years. However, this tablet was so slow due to no OS updates ever that I couldn't stand it any longer.
I recently decided to upgrade to the Verizon Asus Zenpad Z8. The issue I am now having is that no matter what I do, the tablet dies when the car is sitting. I cannot keep up with its power demands. Tasker does not have the options available to put it into airplane mode. But I have gone into the developer mode menu and set it so that the screen goes off whenever the tablet is not receiving power and it goes into super saving mode during the night. It still dies. It cannot get enough power from the cigarette adaptor to charge it fast enough to recharge what it has lost when it was parked. I have upgraded to the fastest cigarette charger I could find (3A). The battery life barely moves while the car is on, it charges soooo slowly. But the battery drains very quickly when off. This means that every time I get in the car, the tablet is off and I have to pop the panels off the dash to turn it back on.
I recently tried to use a small power inverter (powered from the cigarette adapter). This caused a massive feedback loop that was unbearable (and not fixed by an inline noise filter). I then tried a true sin wave inverter, same result. Although this did solve the power problem, it charged fast enough that there would be enough battery life that the car could sit overnight and not completely die.
I had to go back to the cig adapter. This tablet is thus far, un-rootable. That limits my options with shuttings things down and limits the features available in Tasker.
If I switch the cig adapter to power the tablet all the time, then I don't have a way to tell the tablet when to shut the screen down (so that people walking by don't see a tablet in my car and break in). I'd like some way for the tablet to know when the car is off so that it can shut things down. The easiest way to do that was by making the cig lighter turn off when the car turns off.
If anyone has any other ideas, I'm open to about anything at this point. This is getting really frustrating. Thanks.
I bought this tablet because my whole family has USB-C devices. No more stupid micro USB what an abortion that connector was. At any rate at first we used USB-A to USB-C adapter cables with USB-A charging devices. I noticed right away that most of my chargers would overheat quickly or simply charge quite slowly...the charger could not keep up with the demand if you were trying to stream video to the phone or whatever. Then I bought Google Pixel phones for me and my wife and noticed that the supplied charger has a USB-C port on it and the supplied charging cable is USB-C to USB-C. These Google supplied chargers would completely charge a dead pixel phone in 20 minutes. After reviewing the USB-C standard on Wikipedia I noticed a much higher ampacity available using USB-C to USB-C devices. So for my car I bought an LM317T integrated circuit and with a resistor and a heat sink I cobbled a little 3.5 amp 5v charging port in my dash. You could also use an LM7805 if you wanted and insert a small value resistor on the ground reference if you really want the extra .5 volts. Make sure and attach the ic to a small heat sink with heatsink compound. You will need to solder your female port to a female USB-C and use a USB-C to USB-C cable as the USB-A connector on the Asus supplied cable cannot pass enough current.
ninasmith said:
I recently decided to upgrade to the Verizon Asus Zenpad Z8. The issue I am now having is that no matter what I do, the tablet dies when the car is sitting. I cannot keep up with its power demands. Tasker does not have the options available to put it into airplane mode. But I have gone into the developer mode menu and set it so that the screen goes off whenever the tablet is not receiving power and it goes into super saving mode during the night. It still dies. It cannot get enough power from the cigarette adaptor to charge it fast enough to recharge what it has lost when it was parked. I have upgraded to the fastest cigarette charger I could find (3A). The battery life barely moves while the car is on, it charges soooo slowly. But the battery drains very quickly when off. This means that every time I get in the car, the tablet is off and I have to pop the panels off the dash to turn it back on.
I had to go back to the cig adapter. This tablet is thus far, un-rootable. That limits my options with shuttings things down and limits the features available in Tasker.
If I switch the cig adapter to power the tablet all the time, then I don't have a way to tell the tablet when to shut the screen down (so that people walking by don't see a tablet in my car and break in). I'd like some way for the tablet to know when the car is off so that it can shut things down. The easiest way to do that was by making the cig lighter turn off when the car turns off.
If anyone has any other ideas, I'm open to about anything at this point. This is getting really frustrating. Thanks.
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Click to collapse
Here's something you can try:
Use a different signal to trigger sleep mode, like WiFI. You could use a cheap 3G router and have the tablet connect to it via WiFi. When you exit the car take the router with you = no WiFi = tablet goes to sleep.