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[Q] Battery pack, 10k mAh @ 2amp

I'm going to get a battery pack,
Probably a huge capacity like 8k to 12k mAh with super fast charging like 2Amp.
My questions are
1. Can nexus s use the 2amp charging rate?
[Samsung changer for nexus s is 0.7A and I tried using my HTC charger which is 1A. It really charged up quicker.]
2. Will my battery get hurt if I use such high of amper?
Please give me some advice. If possible, please give me some suggestion.
Thanks in advanced.
Sent from my Nexus S using XDA Premium App

The 2A rating is just the maximum current that can be drawn from it, it doesn't mean its supplying 2A constantly. The current drawn will depend on how fast the Nexus S decides to charge. Of course there's the issue of charging in USB mode instead of AC mode if the data pins of the USB port are not shorted, which most third party accessories don't. Then the Nexus S will only draw 500mA at most, which is quite slow. If you short the data lines of your USB cable, for example, your Nexus S will draw up to ~700mA, that will be the same rate as the stock charger.

Si_NZ said:
The 2A rating is just the maximum current that can be drawn from it, it doesn't mean its supplying 2A constantly. The current drawn will depend on how fast the Nexus S decides to charge. Of course there's the issue of charging in USB mode instead of AC mode if the data pins of the USB port are not shorted, which most third party accessories don't. Then the Nexus S will only draw 500mA at most, which is quite slow. If you short the data lines of your USB cable, for example, your Nexus S will draw up to ~700mA, that will be the same rate as the stock charger.
Click to expand...
Click to collapse
Getting the battery soon... will tell you guys the experience.
Sent from my Nexus S using XDA Premium App

melvinchng said:
Getting the battery soon... will tell you guys the experience.
Sent from my Nexus S using XDA Premium App
Click to expand...
Click to collapse
Sorry to revive a dead thread like this, but what came of this?

Is using 2A charger safe?

Hi everyone.
Recently i lost my orginal charger that comes with GN.
And i decieded to buy a new one.it is samsung branded but for tablet and the output is 2A.
If im not wrong the orginal is 700mA.
Now when i put the phone into charge i feel a little lag and slow down while its charging.
My question is why such a thing happening.?
Sent from my GT-N7000 using xda app-developers app

Original one is 5v 1A
| message swifted from Note, travelled in the air to gateway and wi-maxed to [email protected] |

The original charger output rating is 5.0V 1.0A....well have charged my note many times through LG and nokia chargers but never faced any lags or slow performance..
Sent from my GT-N7000 using Tapatalk 2

I am not sure with the note but I have experienced this with previous phones. using different charger of different diff rating damages the battery life
| message swifted from Note, travelled in the air to gateway and wi-maxed to [email protected] |

I use both, 1 and 2 A
Anyway the charging current is controlled by kernel.
If I remember right it is limited to 2A
(been a while since i looked into the driver code)

Once i had issues where when my touch response was very jumpy I mean was unable to type a single correct word.. Later on i plugged the charger directly to the wall socket and it was fine. It was a problem with the spike buster, some grounding issues and the charger was original samsung note.. Was able to replicate the same with dellstreak on the same spike buster..
Sent from my GT-N7000 using Tapatalk 2

So its safe to use 2A charger.
And is there any advantages to charge by higher amp?
I mean maybe faster charging time.
And the other question remains with lags and performance issue....!
Sent from my GT-N7000 using xda app-developers app

Yes it charges much faster. However as stated before, it might have a negative effect on battery life.
Then again the price of a new battery won't kill us
For now my battery is still ok and I bought my Note last year...

Ok i switched the wall AC plug to another one. And no lags anymore.
I think it was that grounding thing our friend said before.
Currently im using 3250 battery gold.china made. Hope new charger wont couse any problem to this battry.
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Just check in the beginning that it doesn't run hot while charging.

Acually it was hot with orginal charger while charging before.
But now its totally fine.
Sent from my GT-N7000 using xda app-developers app

Sadra.imam said:
Ok i switched the wall AC plug to another one. And no lags anymore.
I think it was that grounding thing our friend said before.
Currently im using 3250 battery gold.china made. Hope new charger wont couse any problem to this battry.
Sent from my GT-N7000 using xda app-developers app
Click to expand...
Click to collapse
Glad that it helped you... I thought that I broke the touchscreen digitizer cause when this happened to me I was unable to even unclock the screen at first few go's... :beer: cheers
Sent from my GT-N7000 using Tapatalk 2

Cheers mate.:beer:
Sent from my GT-N7000 using xda app-developers app

My friend bought an SGN2 yesterday and I saw that the original charger that came with it was 5.0V2A.. I was surprised but i want to try it out.. for sure it would slash the charging time in half.. >

capitansid said:
My friend bought an SGN2 yesterday and I saw that the original charger that came with it was 5.0V2A.. I was surprised but i want to try it out.. for sure it would slash the charging time in half.. >
Click to expand...
Click to collapse
And take the battery as well with it in half the time!!
Sent from my GT-N7000 using Tapatalk 2

yes it mite damage the battery

Yes the more amps the better so long as the volts match . Better a more powerful, than weak.
The phone draws what it needs no more
It will not screw the batt. It draws what it needs .underpower is worse . The charger could blow...not that way
Sent from my GT-N7000 using Tapatalk 2

In my experience using phone while its on charging progress will not effect the process and time with 2A charger.
In any case using 2A is best.
I bought an orginal samsung tablet charger which is match with other orginal accessory that comes with phone.nice....
Sent from my GT-N7000 using xda app-developers app

Following Ohm's law, assuming we have the same resistance (the battery/charging circuit), the AMPs (current) would not rise as long as the Voltage wont rise..
So as long as your charger is pumping out 5v, the charging circuit on the phone would take control of the current.. 2A on the charger simply means it can pump out 2A max when the charging circuit demands that much.. I have a 12V 30A power supply and I'm using it to light some LEDs.. They dont burn out.. They only take the current that they need...
Simply saying, even if you have a 5v Unlimited Amp charger, It wont kill your phone.. The charging circuit will take control of the current limit.. If it senses that there is an overcurrent in the system, it will cut it off.. If you have a charger that pumps out more than 5v (I'm sure that is a non standard USB charger) then thats the time you have to worry..

thats a lot explanatory
---------- Post added at 06:14 AM ---------- Previous post was at 06:13 AM ----------
so its safe to say 5V & any Amp is ok

[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
Click to expand...
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.
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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

Charging phone 2.1a

Will it damage my phone at all charging from a usb at 2.1a
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Billy141 said:
Will it damage my phone at all charging from a usb at 2.1a
Sent from my C6603 using xda app-developers app
Click to expand...
Click to collapse
I don't think so, I am having a car and and wall charger at 2.1a and I didn't face any problems till now, infact it charges faster than the normal one. But, You should try it at your own risk.

A USB charger, like a battery or any other source of charge, cannot force more charge through a device than the device will allow.
Your phone may well charge faster than it would using the official charger, but I dare say it is safe to assume that Sony (a company that has been making electronic products probably since before you were born) are no fools and would have set a safe limit to how much current the phone will sink.
It's like having a tiny 12V light, enough AAA cells to deliver 12V, and a 12V car battery. The car battery may be able to deliver several thousand times the current that the AAA cells can but the light will shine no brighter and will suffer no damage from the car battery because it will only take the current that its internals allow.

Thank you that's what I needed to know!
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Need suggestions for buying a new charger

My original charger is lost so I need to buy a new one . At this point I am charging with my friend's charger .
I will not buy the original one as that is costly . So tell me which charger I should buy for comparably fast charging

You need to find a charger which has the same kind of ma rating for similar charge speeds, the current (ma) is basically the limit on how fast it will charge.
Sent from my C5303 using XDA Premium 4 mobile app

I still recommend the original charger They may cost a but more but it will ensure you that you are using the correct one