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How long should it take to fully charge my Samsung Galaxy S2?

It takes around 2.5-3 hours to fully charge my Samsung Galaxy S2. Is that normal?

Most Useful Answer Shafaqfaisal  Oct. 8, 2012 at 04:02

I have been charging my s3 for 10 hours still now it's only 64% charged why

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36 comments

JanSt / MOD  Jan. 10, 2012 at 15:53

The obvious question is, "fully charged from where? Zero?" :p

Nah, the SGS2 I had charged from 10% to 100 in 2 to 2 1/2 hours.

Also, btw, are you using the wall charger or via USB and PC?
Lastly, was using a Galaxy Note for a couple of weeks - the b*gger took 4 1/2 to 5 hours for a full charge O_o

Treab  Jan. 10, 2012 at 15:58

well it is a 2500mah battery... not surprised lol.

JanSt / MOD  Jan. 10, 2012 at 16:05

well it is a 2500mah battery... not surprised lol.

iPad 2 has a battery of appr 6500 mah, first Samsung Galaxy Tab has 4000mah - I used both quite a bit, and they both charge in 2 - 2 1/2 hrs

Treab  Jan. 10, 2012 at 16:13

maybe more contact points?

JanSt / MOD  Jan. 10, 2012 at 16:23

maybe more contact points?

who cares :p A phone like the Note that you can drain in 6 hours if you use all bells and whistles, shouldn't take 5 hours to charge :p

matt101101 / MOD  Jan. 10, 2012 at 16:50

Yeah, Jan's right. A couple of hours using the stock wall charger should do the trick.

rabbb9  Jan. 21, 2012 at 20:17

these last couple of days iv been charging my s2 but it never beeps when fully charged, the lightening bolt just keeps showing in the green battery box its been charging for 4 hrs now was 10% left but even when 50% it never beeps.. it used to say battery full unplug charger

matt101101 / MOD  Jan. 22, 2012 at 13:58

Have you tried charging the phone switched off?

GalaxyS2  Feb. 12, 2012 at 21:30

Well it charges at a rate of 0.4 % / minute

JanSt / MOD  Feb. 12, 2012 at 23:07

Well it charges at a rate of 0.4 % / minute

0.4% of what? Do you have a link?

matt101101 / MOD  Feb. 12, 2012 at 23:15

Nah, it doesn't take over 4 hours to charge an S2.

100/0.4=250

250/6=4.16

4.16 hours = 4hrs 10mins approx.

It doesn't take 4 hours and 10 mins to fully charge an S2, even from a totally dead battery.

matt101101 / MOD  Feb. 12, 2012 at 23:17

Jan, I think he means the S2 charges 0.4% of its total battery capacity per minute the phone is on charge. But, that would equal a total charge time of well over 4 hours, it's more like 3 in the real world.

JanSt / MOD  Feb. 12, 2012 at 23:57

Jan, I think he means the S2 charges 0.4% of its total battery capacity per minute the phone is on charge. But, that would equal a total charge time of well over 4 hours, it's more like 3 in the real world.
aah ;)

shojunyanobiyata  Mar. 19, 2012 at 05:33

my s2 take 3hours to full but not completely full because when i take out the charger the battery turn to 99%.. last night i charge my s2 for 3h 50m and it completely full.. i take out the charger it keep showing 100% for one hour...

tala017  Apr. 19, 2012 at 09:40

ey i charged my samsung galaxy note for about 2 hours. i even saw the battery picture charging up. why is it that after i removed the charger, i could not open the fone... help please, if the charger cable was loose, wouldnt there be at least 20-30%charge on the fone and i can still turn it on?

Shafaqfaisal  Oct. 8, 2012 at 04:02

I have been charging my s3 for 10 hours still now it's only 64% charged why

JanSt / MOD  Oct. 8, 2012 at 11:16

I have been charging my s3 for 10 hours still now it's only 64% charged why
Are you charging via USB? Or wallcharger? I know my S2 was slow, but it never took more than 4-5 hours from ZERO...

Pondlife  Oct. 8, 2012 at 13:42

If it's a wallcharger is it the original or a different one.
Are you using it at the same time? That will slow the charging down.

matt101101 / MOD  Oct. 8, 2012 at 13:48

Jan, what were you doing to it to make it take 5 hours to fully charge?

JanSt / MOD  Oct. 8, 2012 at 14:17

It's odd - but it was on Lite'ning ROM. Stock ROM 2hrs as I posted initially. But then: on Lite'ning ROM battery lasted longer.

bg1955  Oct. 12, 2012 at 01:31

I am also wondering about the extremely long time it takes to charge Galaxy S-II phone...I was taking pictures outside and barely got an hour of use from a fully-charged phone; it is only at 64% and it has been charging from the (supplied) cord for about 4-5 hours...if this phone is defective I need to know; only second full day I have had it!

matt101101 / MOD  Oct. 12, 2012 at 08:57

I am also wondering about the extremely long time it takes to charge Galaxy S-II phone...I was taking pictures outside and barely got an hour of use from a fully-charged phone; it is only at 64% and it has been charging from the (supplied) cord for about 4-5 hours...if this phone is defective I need to know; only second full day I have had it!

Try turning it off and charging it, if that doesn't work, send it back.

ElectricBogaloo  Nov. 17, 2012 at 13:02

Hi all, (ps pardon my grammar, i am from the Netherlands, Dutch)

In fact it is very simple, for all your devices to answer this!
First you have to know the battery capacity, i.e. 3100 Mah
3100 Mah is 3.1 A (A = ampere) and ampères, 'amps' allway go by the hour.

Then you have to read what your charger is putting out of its socket, i.e. 1.2 A(mpere)
If you know these 2 things, the formula is this: 3.1 / 1.2 = 2,58 hours
Have a car charger? almost empty battery and car charger puts out 0.5 A (or 500 Mah)
it is : 3.1 / 0,5 = 6,2 hour.

Offcourse this is theory for an allmost empty battery. But also it depends if you charge i.e. a Phone in it's on or off state, from 3% or 20% rest-capacity.
But when going form allmost empty, the formula is good enough. Because when charging, a bit is lost, it is a nature law, and that energy is the 'heat' you feel.

So example, real life: note 2 is at 5%, shut Phone down, to off.
Charger is putting out i.e. 1 amp, = approximately 3 hours charging time.

Also 'fast charging' is not as good for your battery as slower charging. So if you know the device will be off for 8 hours when you sleep, hook it up to your pc usb port, the slower batterys are charged the longer they live, and get at little more charge in them. (RC hobby chargers can put i.e. 4000 Mah in a 3800 Mah 'racepack' when done right.)

JanSt / MOD  Nov. 17, 2012 at 17:51

Thanks

capricornar  Nov. 18, 2012 at 22:39

It took 3 hrs 15 mins to charge my galaxy s2 from 1% to 100% which i guess is too long :s

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