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[Q] Charge with 5V/2A..?

Hi guys!
I have recently bought a Nexus7 tablet which has a 5V/2A charger .
Can i charge the i9305 with the Nexus charger (5V/2A) or it will cause problems..?
Thanks in advance!

alexisgt said:
Hi guys!
I have recently bought a Nexus7 tablet which has a 5V/2A charger .
Can i charge the i9305 with the Nexus charger (5V/2A) or it will cause problems..?
Thanks in advance!
Click to expand...
Click to collapse
I'm not sure of the voltage of the I9305 but the more volts = faster charging but hotter and hotter means a shorter life for the battery but it should be fine, I would trade it for faster charging. For amps, I have no clue and please correct me if I'm wrong anybody.
Sent from my GT-I9305 using xda premium

Magik_Breezy said:
I'm not sure of the voltage of the I9305 but the more volts = faster charging but hotter and hotter means a shorter life for the battery but it should be fine, I would trade it for faster charging. For amps, I have no clue and please correct me if I'm wrong anybody.
Sent from my GT-I9305 using xda premium
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Click to collapse
I'm pretty sure that you are saying the opposite way.
You can use more Amp but not more voltage.
More Amp - charges quickly.
More voltage - could blow your device.
Cheers!
Sent from my GT-I9305T using xda app-developers app

AW: [Q] Charge with 5V/2A..?
In principle, the battery would load faster at higher charging current when the battery is capable of fast charging. If not, could reduce the battery life. I believe according to the charging control of Samsung, a current limiter is installed that can always draw only 1 amp. So it brings no benefit to using the charger of the tab. It may also be that the charging control of the current is limited so that is not loaded. The phone should not be harmed.
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Charge
Should be fine for short term use.I've used half amp one amp and one and half amp car chargers wouldn't go any more than two amps no need to..may degrade battery a little so what there cheap enough to replace lol..easy peasy.. I live in tents an caravans 24/7 use leisure battery's not problem with amps just volts..bless solar panels..

The phone take what Amp it needs.. No more than its made for. 2A is only what the maximum out is for the charger.
You could make a charger with 50A, the phone still dont take more.
The volt is the value that need to be fixed though.
All phones charged via a usb needs 5V, no more, no less.(Usb =5V allways) Most batterys now days is something like 3.7V. Correct me if Im wrong.
Any way, you need a couple more volts in the charger than the battery to charge it.
Answere=Yes.. go ahead and charge.
Sent from my GT-I9305 using XDA Premium HD app

blisslove said:
I'm pretty sure that you are saying the opposite way.
You can use more Amp but not more voltage.
More Amp - charges quickly.
More voltage - could blow your device.
Cheers!
Sent from my GT-I9305T using xda app-developers app
Click to expand...
Click to collapse
That's exactly what I needed, cheers mate.
Sent from my GT-I9305 using xda premium

I have had an HTC HD2 and used it's charger to charge my SGSII and now my SGSIII.
The time taken to charge with that is about the same as the SGSIII charger.
The charging circuits on the phone are smart enough to know that you are charging from a mains' adapter instead of an USB output from a computer and thus adapts the current draw from the system.
I previously did tests on the HD2 regardsing charging times and even with bigger supplies that the 1A one from HTC, it did not charge any quicker.

fred_up said:
I have had an HTC HD2 and used it's charger to charge my SGSII and now my SGSIII.
The time taken to charge with that is about the same as the SGSIII charger.
The charging circuits on the phone are smart enough to know that you are charging from a mains' adapter instead of an USB output from a computer and thus adapts the current draw from the system.
I previously did tests on the HD2 regardsing charging times and even with bigger supplies that the 1A one from HTC, it did not charge any quicker.
Click to expand...
Click to collapse
That charging circuit is made to cooperate with the battery and the rest of the phone.
So only difference you will notice is slower charge time if you are using a to weak charger that cant deliver the right amp.
As mentioned earlier you could use a 50A charger with out any faster charging time. Amps is allmoust of no interest if its not to weak.
Look at electricity as water. Amp is like how many liters of water a sertain pipe could deliver. Volts is more like how strong the flow is. To mouch pressure will destroy the flower. But with Amps you could pretend that the flower demands a certain amount of water and it will not suck more just becaus it could get more.
Sent from my GT-P7500, JellyBean rom v6, A1 kernel v1.7

[Q] Battery drain while connected to car charger

Using CM10.1 (06-14 nightly) on my One (International), connected to a Belkin 1A USB car charger with a decent quality USB cable. The phone discharges slowly in general use, and quickly when using GPS. Looking in battery settings it shows "Charging (AC)", which would suggest that it's drawing the full 1A for charging. I didn't notice this problem on stock Sense, although it's been a while since I used that.
Has anybody else seen anything similar on their One? Is there any useful information I could get from a logcat to give to the CM devs?
Thanks in advance,
Jon

OK I checked on stock and it does drain similarly. Should I just get a more powerful charger or could I have a hardware problem? Tried with 2 different 1A car adaptors.
Sent from my One using xda premium

Have you got a clamp meter or know someone who has one? That will tell you how many amps are going into your phone. It does sound like the charger though as your charger at home should be similar voltage/amps to the car charger only the AC charger needs a transformer and rectifier to step down the voltage and change it from AC to DC, car chargers just step down the voltage a little (12v-5v) so require little additional size. Probably easiest to swap out the charger, they're pretty cheap
Sent from my One using xda premium
Sent from my One using xda premium

I think you need a bigger charging maybe the charger is not able to provide the needed ampere.
Sent from my HTC One using xda app-developers app

Thanks guys. I've ordered a 3.6A charger which had reviews saying it worked well for high power usage Android devices. So hopefully that'll sort things out. I'll post back my results.

OK, tried with the new charger and a good USB cable, and all is well. Even with GPS and Spotify running together the phone still charges slowly.

jondrums said:
OK, tried with the new charger and a good USB cable, and all is well. Even with GPS and Spotify running together the phone still charges slowly.
Click to expand...
Click to collapse
It's probably not about the Amp rating of the charger. You probably had a cheap charger unit that couldn't deliver the amperage the phone needed either cos it was using cheap parts or something. A proper 1amp charger will still do as well as your new 3.6A charger

ArmedandDangerous said:
It's probably not about the Amp rating of the charger. You probably had a cheap charger unit that couldn't deliver the amperage the phone needed either cos it was using cheap parts or something. A proper 1amp charger will still do as well as your new 3.6A charger
Click to expand...
Click to collapse
Yeah that makes sense. I just thought that if I got a massively over-specced charger then it would at least manage 1A Would have expected the Belkin one to work properly in the first place but never mind.

[Q] Maximum AC wall adapter rating for the i9000

Is it safe to use wall adapter with more current than the standard 5VDC/0.7A rating for the i9000?
I have in mind 5VDC/1A or even 5VDC/2A. I have seen that several high current product vendors/suppliers do say they are compatible
As I undersatand, the technology of the batteries has the intelegence to request the current from the wall charger, therfore if more is desired than more will be supplied...
If there are any technical or experienced person than please help us understand.
Thanks'

Hi,
I use a 1A charger occasionally without any side effects, but I think as a replacement charger, it might shorten the life of your battery.
Mine is about 4 years old and still holds a full days charge.
Sent from my Galaxy Nexus using Tapatalk 4

Since I assume that the phone Battery has a charger circuit that regulates the current needed then having a high current reserve on the AC charger should not be an issue. The AC charger should even run cooler.
Sent from my GT-I9000 using xda app-developers app

Any other feedback from people that have the knowledge or experience?
Need your feedback before i purchase a high current wall charger.
Sent from my GT-I9000 using xda app-developers app

Portable Chargers / External Batteries

I have the VS980 from Verizon.
Does anyone know if there are any portable chargers / external battery packs that will charge this phone without giving an incompatible or "slow charging" notice? If there aren't any that fast charge, are there any that slow charge? Slow charge would still be better than a dead battery.
I find the battery life is mostly great, but some days it seems to run down quite quickly. In any event, I'm going on a trip and may not have access to a charger during day and plan to be taking lots of pictures and videos and listening to music, so I'd like a back-up battery, just in case.
(curse Verizon and their non-removable battery...)
Anyway, there are threads for compatible car chargers, wireless chargers and USB cables, so why not add one for portable chargers / external batteries? Please list them here!

I purchased 9000 mAh portable charger from walmart online shop for about 70 to 80 dollars, and it seems to work fine. Its just bit bigger then other portable chargers, but ull never have to worry about battery with this monster.
I have tmo version btw
Sent from my LG-D801 using xda app-developers app

ILLHYHL said:
I purchased 9000 mAh portable charger from walmart online shop for about 70 to 80 dollars, and it seems to work fine. Its just bit bigger then other portable chargers, but ull never have to worry about battery with this monster.
I have tmo version btw
Sent from my LG-D801 using xda app-developers app
Click to expand...
Click to collapse
Way to much $$$$
Check out this
http://www.amazon.com/gp/aw/d/B008YRG5JQ/ref=mp_s_a_1_1?qid=1381189010&sr=8-1&pi=AC_SX110_SY165_QL70
Sent from my LG-D801 using XDA Premium 4 mobile app

Slow Charging?
ILLHYHL said:
I purchased 9000 mAh portable charger from walmart online shop for about 70 to 80 dollars, and it seems to work fine. Its just bit bigger then other portable chargers, but ull never have to worry about battery with this monster.
I have tmo version btw
Sent from my LG-D801 using xda app-developers app
Click to expand...
Click to collapse
Thanks for your reply! Does this device give a "slow charging" notification?

I have both these and both charge at full speed:
http://www.amazon.com/Portable-External-Micro-USB-Rechargeable-Smartphones/dp/B00CEZJT2E
http://www.amazon.com/13000mAh-Portable-Dual-Port-Thunderbolt-Incredible/dp/B00BQ5KHJW
theres also the E5 which is 15000mah, any anker that outputs 2a will charge the phone at full speed as the charger the G2 comes with outputs 1.8a

Not just amperage
djkinetic said:
I have both these and both charge at full speed:
http://www.amazon.com/Portable-External-Micro-USB-Rechargeable-Smartphones/dp/B00CEZJT2E
http://www.amazon.com/13000mAh-Portable-Dual-Port-Thunderbolt-Incredible/dp/B00BQ5KHJW
theres also the E5 which is 15000mah, any anker that outputs 2a will charge the phone at full speed as the charger the G2 comes with outputs 1.8a
Click to expand...
Click to collapse
The problem is, it seems that the phone doesn't just go by amperage, but also by the cable. The OEM USB cable has 20AWG wires, which carries a higher load, and cables which have thinner wires seem to trigger the slow charging. The only way to know if these chargers would charge at full speed would be to plug them in.
Has anyone actually plugged any of these in to verify that they do the full speed charging without a 'slow charging' notification?

gwbyrd said:
The problem is, it seems that the phone doesn't just go by amperage, but also by the cable. The OEM USB cable has 20AWG wires, which carries a higher load, and cables which have thinner wires seem to trigger the slow charging. The only way to know if these chargers would charge at full speed would be to plug them in.
Has anyone actually plugged any of these in to verify that they do the full speed charging without a 'slow charging' notification?
Click to expand...
Click to collapse
Ive used all types of cables on my g2 with the chargers I listed they don't trigger slow charge. For me at least.
Sent from my GT-I9505G using Tapatalk 4

any benefit using 2amp charger ?

Hi, im just wondering is there any benefit using a 2amp charger on the htc m8 , faster charging ? i know HTC are gonna release a faster charger which is 1.67amp , is it just the amp or it has some feature Quick Charge 2.0 built in you cant get with other chargers ?
the HTC One is rated to support Quick Charge 2.0 capable of accepting up to 60 watts of power – an increase of almost 100% compared to phones with Quick Charge 1.0. The 1.5amp charger bundled with the HTC One (M8), however, does not support Quick Charge 2.0. HTC is planning on releasing an optional 1.67amp charger accessory that will come with the technology later this year
Thanks

Yeah, it will charge a bit faster.
Sent from my HTC One_M8 using Tapatalk

Tikerz said:
Yeah, it will charge a bit faster.
Sent from my HTC One_M8 using Tapatalk
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Click to collapse
Would it be safe though? Cause I heard someone was using a third party charger on 2.0 and the guy said it was heating up like hell
Sent from my Nexus 7 using Tapatalk

ekabon said:
Would it be safe though? Cause I heard someone was using a third party charger on 2.0 and the guy said it was heating up like hell
Sent from my Nexus 7 using Tapatalk
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Click to collapse
I've used the 2.0A charger that came with my Galaxy S4 and didn't really notice the phone heating up to unusual temps.

You can use a 10A charger if you have one (and it works with your power outlet), the phone should never draw more than the maximum it draws.
Sent from my C6903 using Tapatalk

I would really like to hear from someone who's actually used one with our phone model. Thanks
Sent from my HTC One_M8 using Tapatalk

ekabon said:
I would really like to hear from someone who's actually used one with our phone model. Thanks
Sent from my HTC One_M8 using Tapatalk
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Click to collapse
I originally used the charger I got with my M8, but then switched to a 2.5amp charger. According to GSam, my time to charge from around 80% to full is around 15 mins, but with the original charger, it was around 30 mins.
So from my experience, it does charge faster. From what I have read about QC2, the technology is in the processor in the phone. The charger can be any type, as long as it is able to deliver up to 60 watts.
See here - http://www.zdnet.com/qualcomms-quick-charge-2-0-offers-75-percent-faster-charging-7000026519/

The tech is actually in both the phone AND the wall charger:
From http://www.qualcomm.com/chipsets/quick-charge
"While Quick Charge 1.0 rests in the devices only, Quick Charge 2.0 resides in both the device, offered as a standalone IC solution or as part of the PMIC (power management integrated circuit) of Snapdragon™ 800 processors, and in the AC/DC wall charger."
The one you link is worded a little ambiguously:
"Qualcomm hopes to take things further by integrating Quick Charge 2.0 technology into standard micro-USB AC/DC wall chargers. These chargers will look and work like standard chargers, but will be able to deliver Quick Charge to compatible devices."
I tripped on it a couple times when reading it too, but it's implying that the tech does not currently reside in standard chargers, since they're still working on integrating it.

guess i will get the HTC fast charger when out and i bet we should get compatible quick charge 2.0 chargers too
Thanks

The amperage of the charger makes no difference, the device will only ever draw the power it requires to charge, no more. so a 5a charger would be no different to a 2a charger if the phone only draws 1.5a for example. find out what the device needs to charge and get as close as you can to that size for protection reasons

uscool said:
Hi, im just wondering is there any benefit using a 2amp charger on the htc m8 , faster charging ? i know HTC are gonna release a faster charger which is 1.67amp , is it just the amp or it has some feature Quick Charge 2.0 built in you cant get with other chargers ?
the HTC One is rated to support Quick Charge 2.0 capable of accepting up to 60 watts of power – an increase of almost 100% compared to phones with Quick Charge 1.0. The 1.5amp charger bundled with the HTC One (M8), however, does not support Quick Charge 2.0. HTC is planning on releasing an optional 1.67amp charger accessory that will come with the technology later this year
Thanks
Click to expand...
Click to collapse
ekabon said:
Would it be safe though? Cause I heard someone was using a third party charger on 2.0 and the guy said it was heating up like hell
Sent from my Nexus 7 using Tapatalk
Click to expand...
Click to collapse
Yes, it will charge it faster. I used my 2amp charger and it did charge it faster. The phone may have some protection built in to protect the phones hardware. But the battery can handle much higher charge rates and the battery shouldn't start heating up till 20-30 amps. Yes, that's right.
I use Li-poly to race electric RC's and we charge them up to 50 amps. This charger will --->http://www.hobbyking.com/hobbyking/store/__46368__iCharger_308DUO_1300W_Dual_Channel_8s_Balance_Charger.html
Most people only charge at 5-10 amps, but to get peak performance, you will need to create a bit of heat and that doesn't happen till 20-30 amps.

Since I jumped from my old note 3tothe m8 I was able to keep the charger and it's a 2A one. Will I get the full 2.0 benefits with it or must I wait for the HTC one?
Sent from my HTC One_M8 using xda app-developers app

PunishedSnake said:
Since I jumped from my old note 3tothe m8 I was able to keep the charger and it's a 2A one. Will I get the full 2.0 benefits with it or must I wait for the HTC one?
Sent from my HTC One_M8 using xda app-developers app
Click to expand...
Click to collapse
You will get whatever amp the M8 can take. i assume its 2A
I have a 2amp charger and i use it for my M8. i only see about a 30 min different from using a 1amp charger.

Its not just Amps, quickcharge 2.0 Also bumps up voltage. I tested multiple combinations with my htc one M8, here are my findings:
Quickcharge 2.0 18W Aukey (with regular micro usb cable): 9v/1.1A (~10w)
Quickcharge 2.0 18W Aukey (with data cut off cable): 5v/1.52A (~7.5w)
Wall 5v 2.4A charger: 5v/1.52A (~7.5w)
Stock 5v 1A charger: 5v/0.99A (~5w)
Car 5v 2A charger: 5v/1.3A (~6.5w)
some old 5v 700mA charger: 5v/0.7A (~3.5w)
MacBook Air USB port (2013) (with regular micro usb cable): 5v/500mA (~2.5w)
MacBook Air USB port (2013)(with data cut off cable): 5v/1A (~5w)
Ipad charger rated 5.2V/2.3A : 5v/1A (~5w) (no clue why its so sucky)
Also I noticed m8 once connected to charger (non Quickcharge 2.0) slowly increases charge current. if voltage drops below 4.92v it drops it back to these fixed values, whichever is immediate lower: 3oomA, 500mA, 700mA, 1A, 1.3A, 1.42A. 1.52A
these values are as per multimeters.
my car charger is tricky, it sometimes just falls to 1A instead of 1.3 as it border lines V to 4.92 while at 1.3Amps. (it is rated for 2.4A)

Dude... This thread you replied to is a YEAR old!
This has already been heavily discussed in newer threads.
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