Hello,
my Galaxy S II is charging extremely slowly. It takes about 2-3 hours to fully charge.
I underclocked it when its charging with setcpu but it still needs so much time.
My Iphone 3gs charged much faster...
Is there any other option to increase the charging speed?
Search would have saved this post .
SGS2 standard charge time 3 hours .
jje
Don't screw with it. Li-ion battery needs a certain charging algorithm and too much current can blow it up.
jannism said:
Hello,
my Galaxy S II is charging extremely slowly. It takes about 2-3 hours to fully charge.
I underclocked it when its charging with setcpu but it still needs so much time.
My Iphone 3gs charged much faster...
Is there any other option to increase the charging speed?
Click to expand...
Click to collapse
I think this is normal for our devices, sir. Mine takes that long too and it would take longer (more than 5 hours, I think) if only via my PC's USB port. But don't worry about it. The longer it takes for you to recharge your phone means the lower the power that goes into your battery. With that, the longer your battery will last.
I don't recall the exact specs of the S2's charger. I think it outputs 1amp (or lower). If I want to quickly charge my phone, I plug it into my HP TouchPad's charger which outputs 2amps. I may be shortening my battery's lifespan, but I'm not too concerned. I have an additional spare battery and I'll probably end up replacing the phone in another few months anyway.
ohyeahar said:
I don't recall the exact specs of the S2's charger. I think it outputs 1amp (or lower). If I want to quickly charge my phone, I plug it into my HP TouchPad's charger which outputs 2amps. I may be shortening my battery's lifespan, but I'm not too concerned. I have an additional spare battery and I'll probably end up replacing the phone in another few months anyway.
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Click to collapse
What s/he said. ^ Stock battery is around 1600mah. A charge current of 1.6Amps is the most I would go for personally. This should complete the job in around 1hr from completely flat.
jannism said:
Hello,
my Galaxy S II is charging extremely slowly. It takes about 2-3 hours to fully charge.
I underclocked it when its charging with setcpu but it still needs so much time.
My Iphone 3gs charged much faster...
Is there any other option to increase the charging speed?
Click to expand...
Click to collapse
Yes:Switch the phone off. Or if you need it on for calls, then switch off the wifi etc.
Better to keep it charging via USB when you are using your pc/laptop if not using it.
Best of all buy an extended battery, then you have no worries...
ohyeahar said:
I don't recall the exact specs of the S2's charger. I think it outputs 1amp (or lower). If I want to quickly charge my phone, I plug it into my HP TouchPad's charger which outputs 2amps. I may be shortening my battery's lifespan, but I'm not too concerned. I have an additional spare battery and I'll probably end up replacing the phone in another few months anyway.
Click to expand...
Click to collapse
Doing this achieves nothing. Your phone does not draw more than 650mA.
oinkylicious said:
Doing this achieves nothing. Your phone does not draw more than 650mA.
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Click to collapse
I stand corrected. Indeed the phone never draws the full 2amps.
oinkylicious said:
Doing this achieves nothing. Your phone does not draw more than 650mA.
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Click to collapse
so changing the charging current in the voltage control app does nothing anyway?
kyle51 said:
so changing the charging current in the voltage control app does nothing anyway?
Click to expand...
Click to collapse
Correct, purely placebo. Though it would allow you to change USB/MISC charging to 650mA.
Related
i drained all juice of the battery and put to the charge and it took 3 hours for full charge. is this normal
Its normal, it takes between 2:30 and 3...
Chill dude lol
JD
Sent from my Samsung Galactic Beast S II
Haha his like wtf.... That cant b right
Sent from my GT-I9100 using XDA App
I've just charged mine from 7% to 100% and it took a shade over 3.15hrs via plug charger.
Did you have the phone On or Off to charge?
JupiterDroid said:
Its normal, it takes between 2:30 and 3...
Chill dude lol
JD
Sent from my Samsung Galactic Beast S II
Click to expand...
Click to collapse
Arron123 said:
Haha his like wtf.... That cant b right
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Click to collapse
guys it was 1h 15mins on htc desire. battery draining time feels same but 3 times more charging time.
Mine was left on when charging, but next to no use when charging. Never turned a phone off to charge.
Samsung chargers usually have an output of 700mA at 5v while HTC's have 1A at 5v meaning HTC's will charge faster.
Charging batteries faster with higher amperage chargers does save time, but the batteries also usually discharge faster and will degrade over a shorter period of time than would be the case when using more "mild" chargers with lower amperage.
If you plan on charging your phones at night while you sleep, choosing the lower amp charger will give you better battery life (and you won't have to worry about the fact that it takes 3 hours to charge).
Quist said:
Samsung chargers usually have an output of 700mA at 5v while HTC's have 1A at 5v meaning HTC's will charge faster.
Charging batteries faster with higher amperage chargers does save time, but the batteries also usually discharge faster and will degrade over a shorter period of time than would be the case when using more "mild" chargers with lower amperage.
If you plan on charging your phones at night while you sleep, choosing the lower amp charger will give you better battery life (and you won't have to worry about the fact that it takes 3 hours to charge).
Click to expand...
Click to collapse
Very well explained!,
Quist said:
Samsung chargers usually have an output of 700mA at 5v while HTC's have 1A at 5v meaning HTC's will charge faster.
Charging batteries faster with higher amperage chargers does save time, but the batteries also usually discharge faster and will degrade over a shorter period of time than would be the case when using more "mild" chargers with lower amperage.
If you plan on charging your phones at night while you sleep, choosing the lower amp charger will give you better battery life (and you won't have to worry about the fact that it takes 3 hours to charge).
Click to expand...
Click to collapse
I remember when the SGS was first announced it was put across strongly by Samsung not to charge the phone overnight.
They said it was wrong to leave the phone connected when fully charged.
I have not heard anything this time for the SGS II.
Can anyone recommend a faster charger? The wall charger still takes upwards of 3-4 hours to charge, was hoping there was something that puts out some more power.
How many amps does the stock charger put out/how much can the phone 'handle'? (Sorry, I've never messed around with circuits and electronics like that, I'm not sure what the correct terms are)...
For example, http://www.amazon.com/Scosche-reVIVE-Dual-Charger-iPad/dp/B003N7NO4Q that car charger has a 2.1a socket, meant to charge the ipad, would that, in theory, charge the sgs2 quicker than a standard car charger, putting out ~1amp?
edit: realized this is better suited for the accessories forum, feel free to move.
I believe the wall charger is the fastest charger that we have available. I could be wrong, but I haven't found anything faster.
If you turn off your phone and throw it on the wall charger, it will charge faster as the phone is not on to use any battery... but thats probably not what you're looking for.
Your best bet would be to buy an extra battery and external charger and just swap the batteries when they are low. Thats what I do, and its much better than keeping your phone plugged in most of the day.
Our phone has an internally set 650 mA charge current limit - adding a beefier charger won't do anything.
It doesn't help that Samsung put in a crippled charger chip in our device with nonadjustable current, instead of using the more capable one already present in the MAX8997...
and even if the phone lets it charge faster, you really dont want a charger that charges too fast. I'm pretty sure that will murder the battery.
Thanks for the answers, all.
penguinlogik said:
Your best bet would be to buy an extra battery and external charger and just swap the batteries when they are low. Thats what I do, and its much better than keeping your phone plugged in most of the day.
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Click to collapse
This is fine for "emergencies," but swapping batteries will throw off your battery stats.
Rrryan2 said:
This is fine for "emergencies," but swapping batteries will throw off your battery stats.
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Click to collapse
How would swapping batteries thow off battery stats? It seems like everything resets once you boot up with the new battery, and isn't battery charge read off the raw voltage?
Lithium Ion batteries require a very particular two-step charging procedure. The battery has to be charged at constant current until the voltage rises to 4.2V, and then it needs to be charged at constant voltage (4.2V) until the charge current drops to about 10% of its starting value.
The amount of current allowed in the CC phase is a function of the battery's chemistry and capacity. It's expressed as some multiple or fraction of "C", the capacity of the battery. A 1C charge rate on a 1000mAh battery is 1A. The large LiPo batteries I use for my RC Heli and Airplane fleet will charge at 5C, for some of them this is better than 10A. But Li-Ion batteries usually can't tolerate more than 1C (and they usually charge at half that rate since this makes them last longer).
The harder you push the charge rate, the faster you wear out the battery and the more likely it is to fail. If you exceed the maximum charge rate, the battery is very likely to fail catastrophically (failure = fire). I charge my big LiPo batteries in a fireproof box for this reason.
My advice is, leave the phone's charging circuit alone unless you know what you're doing.
penguinlogik said:
How would swapping batteries thow off battery stats? It seems like everything resets once you boot up with the new battery, and isn't battery charge read off the raw voltage?
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Click to collapse
Sure, it reads raw voltage. But the top end and bottom end worsen as the battery ages, and batterystats.bin doesn't know where those values are for a given battery until it's seen them. The system wasn't really designed to take into account the user swapping in multiple batteries.
Rrryan2 said:
Sure, it reads raw voltage. But the top end and bottom end worsen as the battery ages, and batterystats.bin doesn't know where those values are for a given battery until it's seen them. The system wasn't really designed to take into account the user swapping in multiple batteries.
Click to expand...
Click to collapse
Huh... I'll let you know in a year how this battery swapping thing goes then. But wouldn't wear be the same on both batteries if I just swap them daily?
penguinlogik said:
Huh... I'll let you know in a year how this battery swapping thing goes then. But wouldn't wear be the same on both batteries if I just swap them daily?
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Click to collapse
I did this with my captivate where I would swap batteries everyday. Much better than charging if you ask me.
Lithium ion batteries hate heat. Since it tends to get a bit hot while charging, and I don't care how long it takes to charge, I have reduced the AC charging current to 450mA like a USB socket. Can anyone think of any negative effects this might produce?
Takes longer to charge, otherwise no.
But honestly, the little heat it produces when charging probably doesn't matter in your phone's useful life.
jzmtl said:
Takes longer to charge, otherwise no.
But honestly, the little heat it produces when charging probably doesn't matter in your phone's useful life.
Click to expand...
Click to collapse
If I'm not using it I agree, but if I happen to be using the phone while plugged in it gets plenty hot. Much more so than normal use (I have extreme CPU and GPU undervolt).
i charge my 2 batteries with a wall charger, it charges at 4.2v, 350mAh, it takes like 6hours to complete
i dont do this because of your question but it is much simpler swaping, then charging via usb,i get better cycles like this, swap every morning.
Well I bought the Galaxy S3 on the first day of the UK launch and depleted the battery to 0% then charged with the original 1 Amp charger from 0%. I had noticed that this takes a very very long time, around 8 hours. The battery life after charging however is substantial and very adequate.
On the second charge after depletion once again, I decided to use a Griffin 2.1 Amp charger which I had used to charge the hefty Galaxy note with. The Galaxy S3 charges at a much rapid rate and takes around 2-3 hours to reach 100% from 0%. However I have noticed that the battery life depletes a bit faster, Is this due to my imagination or is a 2.1 Amp charger not suitable for this phone as it was with the tablet-like Galaxy note.
Also note that I tried to charge my HTC one X with the 2.1 Amp charger and it charge very slowly, while the original HTC charger has a much lower ampage than 1 Amp
Hmm I have been using my galaxy s charger 0.5amp and it has been charging pretty slowly but seems to deplete faster.
I have been actively using for 50min on wifi now and 85% left. Which seems a bit quick for me. I will try charging with the standard 1amp tonight and see.
Now fast are you depleting at?
I measure my battery life by checking the screen on time just before the death of the charge which was 5 hours on the original charger, with the quick charger its 4 hours. My Galaxy note has no change in battery life weather you any ampere chargers. Also the general battery percentage seems to run low faster anyway on the galaxy s3 using the fast charger.
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I shall try the standard 1 amp charger the next time my phone depletes
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Just wondering, since the S2 had a limit of 650mA for charging, does this apply to the S3? You guys make it sound like it charges slow as well...
Galaxy s2 does charge very slow for me aswell. Compared to htc phones the Galaxy s 2 charges painfully slowly. Now I regularly use the 2 amp charger on my galaxy s3 and have seen a huge improvement in charging speeds. It charges at around 2% per minute and still lasts around 4 hours of screen time for a full charge.
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I noticed that I can only charge fast using original charger. While charger with shorted usb data + & - (ie. htc 1A charger) will not activate fast charging.
You can verify by going into *#*#4636#*#*, Battery, using ori charger will show AC while HTC charger will show USB
I think samsung made some changes to the microUSB pinout
xifer said:
You can verify by going into *#*#4636#*#*, Battery, using ori charger will show AC while HTC charger will show USB
I think samsung made some changes to the microUSB pinout
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Click to collapse
Thanx for the "shortcode". Where does one find those?
Also from reading about the MHL to HDMI cable from older devices not wotking, it does in fact seem that Samsung have changed the microUSB pinouts (although my Nokia 1.2A charger shows AC in that battery "menu").
Mine charges from about 10% to full in about two and a half hours, using the charger provided in the box.
My s2 came with a 0.7amp charger and took about 2.5 hours. My s3 came with a 1amp charger and takes about the same. Charges to 80% in no time and then slows down for the later part of the charge
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A battery isn't like a fuel tank which you simply fill up through the hose until it's full.
Due to physical and chemical reasons, a nearly-full battery takes a lot longer to fill by a certain percent since it simply can't store the energy quickly enough.
Additionally, deep-discharged batteries often start with a slower charging speed (and then cranked up) to keep the battery from dying too soon and/or not being able to reach full capacity.
is the Nokia 1.2A charger ok to use with the samsung G3 as i got one of these spare and would prefer use it if so as the usb is way to short to reach from my desk up and around the back.
but the Nokia 1.2A charger lead is more than long enough
Just to check with all of you, i've been told that it is best not to charge your phone or any other handheld device IF the battery is not at a really low rate, at least not till your device actually prompts you to charge. They were saying that this would cause the battery life to be shortened. But at times, I need to make sure that i have enough battery to last me for a few more hours before i knock off from work, i would just charge the phone (battery at 25-30%) even before it prompts me to. Is it alright to do that often?
2ndly, at times when i stream videos on my phone for many hours, the battery would definitely drain fast and i would need to charge my phone at least 2-3 times a day. Is it alright for me to do that or am i "abusing" it? =X
Appreciate all your advises...Thanks in advance~
so any update on if using the nokia charger is ok with it being 200mah more than the standard 1A charger since it has longer lead.
or there is the 700mah samsung charger from my old S2
speaker5 said:
Well I bought the Galaxy S3 on the first day of the UK launch and depleted the battery to 0% then charged with the original 1 Amp charger from 0%. I had noticed that this takes a very very long time, around 8 hours. The battery life after charging however is substantial and very adequate.
On the second charge after depletion once again, I decided to use a Griffin 2.1 Amp charger which I had used to charge the hefty Galaxy note with.
Click to expand...
Click to collapse
neko0nna said:
Just to check with all of you, i've been told that it is best not to charge your phone or any other handheld device IF the battery is not at a really low rate, at least not till your device actually prompts you to charge. They were saying that this would cause the battery life to be shortened. But at times, I need to make sure that i have enough battery to last me for a few more hours before i knock off from work, i would just charge the phone (battery at 25-30%) even before it prompts me to. Is it alright to do that often?
Click to expand...
Click to collapse
I don't know why this misconception still lives on; lithium ion batteries require no priming on first use. The WORST thing you can do with a li-ion battery is to fully deplete it before recharging. It is much better to top it off whenever possible; having said that leaving it turned on, on the charger once it is full is also not the best thing (though nowhere near as bad as depleting it fully).
I believe since this phone has a removable battery with external charger the best thing you can do is always charge your battery in the external charger and just switch out the battery when it gets to around 10%.
Nek0onna you should charge your phone whenever it's not full and you have a handy charger.
http://batteryuniversity.com/learn/article/how_to_charge_when_to_charge_table
what about using different chargers though as i have said yet not answered yet,
i got a samsung s2 700mah charger and a nokia 1200mah charger which will work the best for the battery etc
the 1A included one the usb lead is to short for use behind a desk
jjwerrett said:
what about using different chargers though as i have said yet not answered yet,
i got a samsung s2 700mah charger and a nokia 1200mah charger which will work the best for the battery etc
the 1A included one the usb lead is to short for use behind a desk
Click to expand...
Click to collapse
Yeah its fine, you can use it.
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Can anybody check what the max charge rate is on this device with a battery monitor app? I have handfuls of 1A and a couple 2.1A chargers. I'd really like to charge at twice the rate if possible but not all devices support such rapid charging (kernel limits and such). Just curious before I buy one Thanks!
Even if Samsung slipped up and allowed a 2A charge i'd never want to try it, because tablet and laptop batteries are rated and manufactured for a higher current charge/discharge and most phone batteries would heat and swell up and possibly explode.
my HP touchpad charges with a 1A charger and it would be nice to use that with my sgs3.
Can anybody please check what the max charge rate is on this device
Why o why do samsung phones take so freaking long to charge? What good is slightly better battery life if the phone take so much longer to charge?
Yes I know S3 has 2100mah battery but it really shouldnt be taking over 2 hours to charge as phones like the xperia S and iphone 5 charge way faster per mah. Samsung has done a better job with charging speed than the S2 but still its behind.
I dont know why reviews never mention it? Its obvious cost cutting from samsung and trust me I am a big samsung fan but this is really disappointing and surprising that nobody complains about it.
I know atleast on my nexus S that it has nothing to do with the charger, the phone just wont charge faster no matter what charger I use.
Gambler_3 said:
Why o why do samsung phones take so freaking long to charge? What good is slightly better battery life if the phone take so much longer to charge?
Yes I know S3 has 2100mah battery but it really shouldnt be taking over 2 hours to charge as phones like the xperia S and iphone 5 charge way faster per mah. Samsung has done a better job with charging speed than the S2 but still its behind.
I dont know why reviews never mention it? Its obvious cost cutting from samsung and trust me I am a big samsung fan but this is really disappointing and surprising that nobody complains about it.
I know atleast on my nexus S that it has nothing to do with the charger, the phone just wont charge faster no matter what charger I use.
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Click to collapse
Well first of all, most people charge overnight so its a non issue really. I dont get your issue with it. Maybe its not reported because no one cares about an extra half hour or so...
Secondly, if it charges faster, battery life will be decreased....also my iphone took longer to charge than my S3 does
Where's the obvious cost-cutting? Seriously, if people took the time to actually understand the technology they use, we wouldn't have these trivial misunderstandings.
Lot of people like i do charge the phone during sleep time, btw my phone charge very fast when i put on charger in daytime
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neo6776 said:
Well first of all, most people charge overnight so its a non issue really. I dont get your issue with it. Maybe its not reported because no one cares about an extra half hour or so...
Secondly, if it charges faster, battery life will be decreased....also my iphone took longer to charge than my S3 does
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Click to collapse
Ya right as if no one ever runs out of battery before the night. And I like to have the phone by my pillow when I sleep.
And you must not be using a proper charger for iphone I assume?
Gambler_3 said:
Ya right as if no one ever runs out of battery before the night. And I like to have the phone by my pillow when I sleep.
And you must not be using a proper charger for iphone I assume?
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Click to collapse
My s2 has always charged faster than my old iphone 3gs, and is probably on a par with the iphone5.
The s3 seems to charge pretty fast. Stop plugging it in to your pc, it won't charge as fast on there
Having it by your pillow doesn't preclude charging it though..
Gambler_3 said:
Ya right as if no one ever runs out of battery before the night. And I like to have the phone by my pillow when I sleep.
And you must not be using a proper charger for iphone I assume?
Click to expand...
Click to collapse
I was using the charger supplied with my iphone.
Since this post, its taken half an hour to charge my S3 by 40%...
This is elementary maths. Charging a 2.1 Amp-hour battery at 1amp will take ~2.1 hours if there is no concurrent draw . I wish we could break the laws of physics and I bet Samsung wish they could too but since we can't I wouldn't let it bother me if I were you.
EqUaTe said:
My s2 has always charged faster than my old iphone 3gs, and is probably on a par with the iphone5.
The s3 seems to charge pretty fast. Stop plugging it in to your pc, it won't charge as fast on there
Having it by your pillow doesn't preclude charging it though..
Click to expand...
Click to collapse
I dunno about the 3GS but the iphone 4 charges in under an hour.
And how come S2 has charged so fast? Using tweaked kernels? Well you see thats a different thing and not something every user wants to do.
neo6776 said:
I was using the charger supplied with my iphone.
Since this post, its taken half an hour to charge my S3 by 40%...
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Click to collapse
So your S3 takes less than 1.5 hours to fully charge? I searched this and alot of users are reporting way more times and thats talking about the AC charger not computer charging which I know is slower.
farnsbarns said:
This is elementary maths. Charging a 2.1 Amp-hour battery at 1amp will take ~2.1 hours if there is no concurrent draw . I wish we could break the laws of physics and I bet Samsung wish they could too but since we can't I wouldn't let it bother me if I were you.
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Click to collapse
I dunno what you are talking about. An xperia arc S with 0.7 amp charger takes only 40-50 minutes to charge a 1500 mah battery. It sure doesnt fit your criteria.
I don't see it as a problem myself.
If you find it troubling, why dont you try to set charge current higher?
Sad ...
farnsbarns said:
This is elementary maths. Charging a 2.1 Amp-hour battery at 1amp will take ~2.1 hours if there is no concurrent draw . I wish we could break the laws of physics and I bet Samsung wish they could too but since we can't I wouldn't let it bother me if I were you.
Click to expand...
Click to collapse
Sad but true - with the exploding popularity of the S3 the forum seems to be invaded by script-kiddies without any clue
And another thing - if you recharge from an USB from a computer you will only get 500 mAh at most - so it will take 4 hours - but your S3 will NOT overheat and the battery will probably survive for twice more full recharges!
EDIT:
Some explanations for the script-kiddies and mactards without a clue (which if you look below you will see that is most likely trolling around):
http://en.wikipedia.org/wiki/Universal_Serial_Bus#Power
Also certain kernels - for instance Siyah - lets you tweak the recharging parameters - but that will not change the fact that standard computers will immediately disconnect your S3 when it draws more than 500 mAh, or that recharging at 1000 mAh will heat the battery / device and VASTLY accelerate battery aging.
Gambler_3 said:
I dunno what you are talking about. An xperia arc S with 0.7 amp charger takes only 40-50 minutes to charge a 1500 mah battery. It sure doesnt fit your criteria.
Click to expand...
Click to collapse
mah = milliamphour (1000th of an Amphour)
An Amphour is 1amp for an hour so a 1 amphour battery will last 1 hour if you draw 1 amp. That is what Amphour means. When charging, the current drops off when nearly complete which is why I used the ~ as a symbol for "approximately".
It is simply impossible to charge a 1.5 Amphour batter in 40 minutes at 0.7 amps unless the battery is knackered and not fully charging.
I have no interest in arguing with you but physics is physics and the same rules apply to all manufacturers.
xclub_101 said:
if you recharge from an USB from a computer you will only get 500 mAh at most
Click to expand...
Click to collapse
Again I dont see evidence for this. iphone has a battery capacity of 1420 mah so that means it should take around 3 hours to charge through USB when it infact charges in just over an hour even through USB.
farnsbarns said:
mah = milliamphour (1000th of an Amphour)
An Amphour is 1amp for an hour so a 1 amphour battery will last 1 hour if you draw 1 amp. That is what Amphour means. When charging, the current drops off when nearly complete which is why I used the ~ as a symbol for "approximately".
It is simply impossible to charge a 1.5 Amphour batter in 40 minutes at 0.7 amps unless the battery is knackered and not fully charging.
I have no interest in arguing with you but physics is physics and the same rules apply to all manufacturers.
Click to expand...
Click to collapse
Hmm letme recheck the xperia charger. You seem very knowledgeable and I have had questions about charging times for the longest of times and I really want to clear them. Will get back to you.
Gambler_3 said:
Again I dont see evidence for this. iphone has a battery capacity of 1420 mah so that means it should take around 3 hours to charge through USB when it infact charges in just over an hour even through USB.
Click to expand...
Click to collapse
I believe some computer USBs can provide 1amp now.
farnsbarns said:
I believe some computer USBs can provide 1amp now.
Click to expand...
Click to collapse
I am talking about normal computers but just the latest ones. Dont know what apple does but every single android phone takes considerably longer to charge through USB.
Lol my S3 charges really fast compared to my s1&s2
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