Does anyone know the minimum specs for buying a charger? 2.1A or higher? Looks like some places are adding watts to the output capability as well.
All my old chargers aren't cutting it anymore and I need something for the car and other outlets. BTW, I have a VS985.
Thanks in advance!
The stock is 1.8A. So I'd go off that.
Sent from my LG G3
2.1 A won't hurt your phone but keep in mind charging is limited by the cable and the chips capacity. Let's say you have a 5A charger your phone won't charge at 5A but rather its max rate. Make sure you get a good cable to use as well because if it can't handle the amperage it could cause serious issues and or fires in some cases. I use a 2.1A charger and its fine.
Related
I've found a few older threads related to this, but nothing in the S3 or even a Samsung forum.
The stock charger outputs 5v at 1 amp. My Kindle Fire charger is also microusb, and outputs 1.5 amps. I know the phone should only accept as much amperage as it can handle, but does anyone know what the upper limits on this are? People were talking about wiring up crazy Frankenstein cables to get 4 amps in other threads, but I'd assume that's way too much current for the battery to make use of.
From an electrical standpoint, that's a horrible thing to do. Like a person being electrocuted, its the amps that kill you, not the voltage. Its rated for that because the components are likely to fail above that range.
teh roxxorz said:
From an electrical standpoint, that's a horrible thing to do. Like a person being electrocuted, its the amps that kill you, not the voltage. Its rated for that because the components are likely to fail above that range.
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If the old adages were all we were going by, our 1A chargers would be deadly. 1A across your heart is certainly (way more than) enough to kill you, but the resistance of your body vs the 5v output makes the amperage negligible. I've have experience working as an electrician, including on fighter jets. I know Ohm's law, believe me.
What I'm really asking is at what amperage does heat/risk of damage outweigh the faster charge times, and if the hardware caps the charging at a particular amperage in order to avoid damage. I have no plans on making some crazy 4A charging cable. I mainly want to know if using the 1.5A Kindle charger will hurt my phone.
lemoyneiv said:
If the old adages were all we were going by, our 1A chargers would be deadly. 1A across your heart is certainly (way more than) enough to kill you, but the resistance of your body vs the 5v output makes the amperage negligible. I've have experience working as an electrician, including on fighter jets. I know Ohm's law, believe me.
What I'm really asking is at what amperage does heat/risk of damage outweigh the faster charge times, and if the hardware caps the charging at a particular amperage in order to avoid damage. I have no plans on making some crazy 4A charging cable. I mainly want to know if using the 1.5A Kindle charger will hurt my phone.
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Lol Ohm's law..engraved on my arm. Though in short, you could generally get away with +10% on max voltage. 1.5A "shouldn't" affect it sparingly, though prolonged usage of it could shorten the battery life.
lemoyneiv said:
I've found a few older threads related to this, but nothing in the S3 or even a Samsung forum.
The stock charger outputs 5v at 1 amp. My Kindle Fire charger is also microusb, and outputs 1.5 amps. I know the phone should only accept as much amperage as it can handle, but does anyone know what the upper limits on this are? People were talking about wiring up crazy Frankenstein cables to get 4 amps in other threads, but I'd assume that's way too much current for the battery to make use of.
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My stock phone charger was 5V, .7 amps. Regardless, the charging current is limited by the phone, not the charger. It has 2 charging modes. If hooked to a USB port it limits to .5 amps (set by USB standards). If connected to a dedicated charger the phone will charge to a higher limit, 1 amp (I think). You could hook a 100 amp charger to it with 0 gauge cable and it would still only draw a max of 1 amp.
These limits are to protect the life of the battery. High current charging is really bad for the battery,(not too good for your phone either when your battery explodes.)
I just lost my USB wall charger and realized my spares don't charge as fast as my previous one...
My previous charger had my phone at +700ma while in sleep, two of my spares can do 400 and one can only do 200!
One time I used a car charger that had me at +900ma in sleep so I would like to try and find a new wall charger that can get me +900.
BTW all the chargers I have used have said they are 5v 1000ma, so clearly I can't just go by the specs they list- I need a first hand experience of a quality charger.
So I open it to the forums. Anyone here have experience of a particularly strong USB wall charger?
I got a good Motorola one on Amazon for pretty cheap and it's been going strong for a while.
Sent from my GT-N7100 using xda app-developers app
Well, you do need one that's 1000mAh.
You just need one from a reliable manufacturer that's not mis-labelled crap.
I'd just look for a quality brand. I got lucky with one for $1.50 on eBay but the seller isn't selling them any more.
Hm so I guess OEM or genuine name brands should reliably be up to their specs, then? Well, I guess I'm going to shop around for one that maybe says 1500ma or more because I believe my phone can take more than a 1A charger can give it, and it probably won't disappoint
Samsung note II have a battery of 3,100mAh, the charger is 2000mA(2A). but my i can use the same charger for my S2. so i guess that the amphere doesn't really matter. just that the higher the amphere of the charger, the faster it charge. But you sure need a higher amphere charger for bigger battery. Hope this help.
seacreature said:
Samsung note II have a battery of 3,100mAh, the charger is 2000mA(2A). but my i can use the same charger for my S2. so i guess that the amphere doesn't really matter. just that the higher the amphere of the charger, the faster it charge. But you sure need a higher amphere charger for bigger battery. Hope this help.
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I've read that smartphones (at least android phones) have controlled charging circuits that will only allow for as much amperage as they are set to allow. So if you connect a 2000mA charger to the phone but it's limited to 1000mA then it will only draw 1000mA. However as I have noticed just because a charger says it can output 1000mA doesn't mean that it can. I have tried 4 different 1000mA chargers each with pretty different outputs- and if they don't output as much as your phone will take it WILL charge slower. The point of this thread was to gather information on which chargers are reliably fast and ideally economical ones (there's enough OEM chargers I can find for 10x the price of off-brand ones that would hopefully do the job right).
Just wondering because I don't want to mess up my battery but would rather not have to buy another car charger if I don't have to.
fatmando2 said:
Just wondering because I don't want to mess up my battery but would rather not have to buy another car charger if I don't have to.
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I would use it personally, but hopefully someone in the know can give a better answer.
I would compare the amp against the charger.
if it's less which most car chargers are, than you are ok..
only prob. you'd have is if a charger was putting out too much amp and toast the battery.
my 2 cents
take with grain of salt.
I believe it's actually the other way around. You can use a more powerful charger on a device that requires less, because the device will only draw the power it needs.
However don't use a charger that doesn't have enough power to charge the device, as the device could draw more power than the charger can provide and you risk catching the charger on fire.
This is how MacBook chargers work anyway. For example you can use an 85 watt charger to charge a 45 watt MacBook but you should not use a 45 watt charger to charge an 85 watt MacBook. (I have a few MacBooks that's why I used that reference).
I would assume cell phone chargers are the same concept.
Sent from my HTC One.
josh995 said:
I believe it's actually the other way around. You can use a more powerful charger on a device that requires less, because the device will only draw the power it needs.
However don't use a charger that doesn't have enough power to charge the device, as the device could draw more power than the charger can provide and you risk catching the charger on fire.
This is how MacBook chargers work anyway. For example you can use an 85 watt charger to charge a 45 watt MacBook but you should not use a 45 watt charger to charge an 85 watt MacBook. (I have a few MacBooks that's why I used that reference).
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Yep. A device will only pull the current that it needs, so high-powered PSUs on low-current devices is fine and dandy. The only difference in electrical output that would fry the phone would be voltage, but since all USB chargers "are supposed to" put out 5VDC, you're safe.
As for using chargers with less than sufficient current, I can only speak to my experience. Personally, I've never had an issue charging any of my more beefy devices (Nexus 7, Galaxy Nexus, or HTC One) off of an old 500ma charger that came with my Galaxy S (or a car charger with that same output, for that matter). The devices just charge slower. The PSU gets noticeably warm, but I'd never say it got hot to the point where the threat of combustion was even remotely possible. And as for the comparison to the MacBook charger, you're talking a difference of 40 watts, whereas these little USB chargers have a difference of maybe 2.5 watts (from the 500ma to 1A models). Not a lot of power there, really.
That said, if I were to buy a new one, I'd definitely get a charger that has the output spec to match or exceed the device's OEM charger.
I have been using the Moto charger (both USB and car, borrowed from previous Razr Maxx) and they both work great. No issues.
Your phone will regulate the power so you will have nothing to worry about with almost any charger. I plug my phone into my tablets charger all the time which is 2.1a and have never had a problem. My HTC DNA was the only one that had an issue, it would say it's not the proper charger and it's enabling slow charging. Long story short, you should have no issues
i am thinking about if my E975 is limited when it comes to how many amps it can charge with bcs i recently brought a 2A charger also tried it out on my Google Nexus 7 2013 and i don't feel like it charges that much faster then my original LG charger with a 3meter flat OEM kable.
the charger i brought is said to charge with 2A while the original LG is only 1.2A shouldn't i be feeling a difference?
puma99dk| said:
.the charger i brought is said to charge with 2A while the original LG is only 1.2A shouldn't i be feeling a difference?
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No, you shouldn't. You can plug it into a 10 Amp charger, but the phone will only draw the amount it needs. Remember, it's not the charger pushing the current to the phone, it's the phone pulling it from the charger. The charging current is determined by the phone - each Li-Ion or Li-Po battery has a controller curcuit. The important thing is for a charger to be able to provide what a device wants to draw - otherwise, it would charge slowly, or not at all. So, a charger should be rated for not less than X Amp. More amp rating won't hurt, but it won't increase the actual current...
oh this is very useful. I also had the same question.
mine came with a 750mA (.75A) charger. As I left my charger at home during the holidays, I had to make due with one that I bought from a nearby tech store. I was very happy with the charger that I bought as it charges my phone really fast. I found out that my new charger was also a 2A model.
so I guess, in my experience, I noticed a big improvement in charging speeds comparing the 750mA with the new 2A charger. But I guess coming from a 1.2A charger, it only makes little difference.
need a quick help here. i accidentally left my charger at work overnight, and someone decided that its his/her's now ....ive searched around and cant find place to buy the original charger that came with the m8. HTC's website doesnt have it. amazon doesnt. even ebay dont carry it.
i need of a charger. currently using a LG G2 charger thats rated 1.8a 5v .....but with a super slow cable.
is the LG charger okay to use? will it damage my m8 in the long run?
i am also buying this cable on amazon. buy or dont buy?
http://www.amazon.com/Samsung-Universal-5-Feet-Charging-Smartphones/dp/B009OP8KCM/ref=sr_1_1?rps=1&ie=UTF8&qid=1401167720&sr=8-1&keywords=quick+charge+micro+usb+cable
yes, i know there is a quickcharge 2.0 coming out. seeing as the cable is only $5 ...im thinking it will do for now.
thanks in advance
HTC charger outputs 5V and 1.5A. As long as output voltage is same, you can use different chargers. Ampere value just affects charging time. Higher ampere means faster charge. In long term, it can shorten your battery's life, but I don't think 0.3A can cause an observable affect
D0GuKaN said:
HTC charger outputs 5V and 1.5A. As long as output voltage is same, you can use different chargers. Ampere value just affects charging time. Higher ampere means faster charge. In long term, it can shorten your battery's life, but I don't think 0.3A can cause an observable affect
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thanks. ordering now
simpl3lang said:
thanks. ordering now
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I use all sorts of chargers. They are pretty much standard now as far as micro usb goes. As said some are higher rated some are lower. I don't think there is any that will damage the phone as long as its designed for charging and is 5v.
I too use multiple chargers and cables and the only issue I've had is a double length cable that works for charging but won't allow connections to the pc
XDA app on m8 running venom
I charger capable of delivering more current will not damage your phone since the phone won't draw more current than it wants.