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So I just ordered this charger and it charged my phone from 4% to %100 percent in exactly 3 hours!
http://www.amazon.com/gp/product/B0051ZJA64/ref=oh_o00_s00_i00_details
Wow, what a great improvement over stock which takes 6+ hours. This makes me believe, that even though the stock output is rated at 1000ma and this charger's output is only rated 700ma that this charges works correctly!
If you have a 1800mah battery and you charge it at a rate of .7A, it should take it exactly 2.57 hours to charge, (1800/700). With stock it should take less, because 1800/1000 = 1.8 hours, but it takes 6+ hours to fully charge! Something is f'ed up with the stock charger or phone's software...
Yeah. About that. I just got my E4GT yesterday and noticed it does charge extra slow compared to my O.G. Epic.
My wife stayed with hers, maybe I will try charging my phone on hers. I wonder if that would make a difference...
Android Amateur said:
Yeah. About that. I just got my E4GT yesterday and noticed it does charge extra slow compared to my O.G. Epic.
My wife stayed with hers, maybe I will try charging my phone on hers. I wonder if that would make a difference...
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At first my charging was extremely slow but now it'll charge from 2 to 100 in under three hours
Sent from my SPH-D710 using xda premium
I use the Palm charger from my TouchPad. Will go from dead to fully charged in about an hour and a half.
What's you TouchPad charger's output in mah? I think I might have to splice into a spare USB cable and check how much current is actually used by phone when on stock charger...pretty sure it is nowhere close to 1000mah.
2000mah is the output from the TP charger.
According to BatteryMonitorWidget, it estimates avg mA charging at 270mA using the stock charger that came with this particular phone.
I have my original charger from my Evo 4g and have noticed that it charges my phone a lot faster then the stock one that came with the phone. :-( weird
Sent from my SPH-D710 using Tapatalk
sfhub said:
According to BatteryMonitorWidget, it estimates avg mA charging at 270mA using the stock charger that came with this particular phone.
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That sounds about right! I'll see if I can test this with my AMP meter tonight and tell you all for sure on stock vs new samsung charger that I've got.
awesomeindeed said:
2000mah is the output from the TP charger.
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Yeah, at 2000mah it should charge in less than one hour...I would say your actual charge current to be around 1200mah...
i would be careful with these chargers.
i have dealt with a lot of Li-Po's in the past and there was a formula to how fast you should charge them.
i imagine it is the same deal with Li-On.
charging outside such formula could kill the life of your battery or worse.
Seems like i must have gotten lucky as a ton of people are having problems with their phone or chargers.
I just charged my battery from 0 to 100% off the stock charger in 2 and a half hours and i also havent gotten any of the dodgy input problems using the phone while charging.
I went back and took a longer look at the battery history when charging. When starting the charge at 65% it starts off around 828mA, then 540mA, then 360mA, so it looks like (as expected) the phone knows how much current to pull to charge the battery safely and it adjusts based on how full the battery is. Not saying it does this for the charger included with your phone, but that is the behavior for the charger included with this phone.
These are all estimates provided by Battery Monitor Widget because there is no real-time mA current meter in this phone (according to the author)
Ordered one of these. Stock charger takes a lifetime to charge the phone.
My GF got Nexus S 4G and it's stock charger also takes 6+ hours to charge, so there's something wrong with the chargers I guess...
The pins on this charger must me different than the stock charger. Just because the stock charger is rated up to 1Ah doesn't meant the phone or batteries circuitry allows that much output. The resistance and length of the USB pins on the cable are what determines the output of the charger. Simply using a different USB cable with the stock charger will get you faster charge times.
Using a 2Ah charger will get you nowhere, the circuitry doesn't allow that strong of a current. Just a bit of an FYI. Save your money and save your phone, use a different USB cable.
Also, how is the charge time holding up? I doubt you're getting a saturated charge with that charger.
SpaceMonky said:
i would be careful with these chargers.
i have dealt with a lot of Li-Po's in the past and there was a formula to how fast you should charge them.
i imagine it is the same deal with Li-On.
charging outside such formula could kill the life of your battery or worse.
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Ive dealt with 1,2, and 3 cell lipos ranging from 150mah to 5000mah, and every one of them either say to be (or ive been told its recommended to do so) charged at 1C. so a 500mah battery should be charged at .5A, 1000mah at 1A, 5000mah at 5A, etc...
my lipo charger displays a bunch of info as the battery charges and it definitely drops the current as the battery gets closer to being fully charged. if its the same with li-on then I would imagine that .18A should be the most you would charge this battery, but Id rather it take a long time because unless things have changed recently, doesnt the slower you charge the battery prolong its life cycle as well as extend how long it lasts each charge? I only charge mine at night when I am sleeping so who cares if it takes longer than an hour. if I get into an emergency situation I have the cig lighter charger and in the worst case I even have one of those crank flashlights I can use to charge the phone in the event my car battery shorted out or something...
Hello *@*,
I intentionally discharged my GN to a battery level of 1% today to record the charging time just for myself. Then I thought: why not make a graph out of it and share it with XDA?
Total charging time (1% to 100%): 142 minutes
Level checked at 0, 30, 60, 90, 120, 125, 130, 135, 140 and 142 minutes
WiFi On, 3G On, Sync On, Screen Off, no calls/msgs/notifications received, phone not used except for % check
1750 mAh Samsung stock battery & charger
Stock or extended battery? I've noticed my charge time varies wildly. Most of the time it's on par with what you've listed here, but every once in a while it goes up 30% in like 20 mins.
Drewmungus said:
Stock or extended battery? I've noticed my charge time varies wildly. Most of the time it's on par with what you've listed here, but every once in a while it goes up 30% in like 20 mins.
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3G, 1750 mAh stock battery. Sorry, I forgot about that.
Its so curious how the charge can be faster at the start
Rickymax said:
Its so curious how the charge can be faster at the start
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Get a more powerful charger.... I'm using my playbook charger, which uses a 2.1 amp... Way faster than 142 mins... Mine takes about 1:30 to charge from 1% to full.
Sent from my Galaxy Nexus
Rickymax said:
Its so curious how the charge can be faster at the start
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All capacitors acts this way (a battery is also a capacitor) the charge/discharge is always fsstest to 63% both ways and after that it slowes down.. this can ofcourse be monitored and controlled with soft or hardware. But this is the reality of capacitors
Sent from my Galaxy Nexus using xda premium
big samm said:
Get a more powerful charger.... I'm using my playbook charger, which uses a 2.1 amp... Way faster than 142 mins... Mine takes about 1:30 to charge from 1% to full.
Sent from my Galaxy Nexus
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isnt it bad for the battery when it is not designed to receive charge that quickly?
All about charging LiIon batteries: http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
TL;DR:
LiIons are charged in two main stages:
- stage 1 with constant current, that's the fast charging rate for (roughly) the first 2/3 of the batteries capacity
- stage 2 with constant voltage and a tapered charge current for the last 1/3 of the batteries capacity, that's the slow part where the graph flattens
This is necessary because a LiIon battery is full at exactly 4.20 V and can not handle any overcharge. In fact at ~4.55 V (only + 0.35 V!) the battery would "vent with flame" aka explode.
If you wanna do this on purpose, this is what will happen: http://www.youtube.com/watch?v=YCWdnjLqVWw
Using a more powerful charger can work if the electronics inside the GN handle the higher current properly. I wouldn't recommend it, though. It may charge quicker but it will wear down your battery faster as well.
The phone can only draw up to 1A regardless of much higher the charger is.
So if you're buying a charger, don't bother paying extra for a 2A, but there is no harm in using a 2A charger if you already have one.
wonshikee said:
The phone can only draw up to 1A regardless of much higher the charger is.
So if you're buying a charger, don't bother paying extra for a 2A, but there is no harm in using a 2A charger if you already have one.
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But I can assure you that my phone charges faster with my Playbook charger than the regular charger that came with the phone... How many amp the regular charger uses?
Sent from my Galaxy Nexus
big samm said:
But I can assure you that my phone charges faster with my Playbook charger than the regular charger that came with the phone... How many amp the regular charger uses?
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Stock charger is 5V/1A (=5 watts). There may be some leeway built into the GN's charging electronics so it can utilize more than 5 watts, but you can safely assume that Samsung would have packaged this phone with a 10 watt charger if it was safe (or desirable in terms of charging time vs. battery durability). Charging time is an important aspect after all.
The phone can absolutely handle it. I think Samsung is just too cheap to give us a rapid charger, I mean there was enough space in the box.
Sent from my Galaxy Nexus
My car charger is a 2amp charger and does approximetly 1 percent a minute. At home I connect it to my HP Touchpad charger and it seems to charge really quick.
But I LOOOOOOVE my car charger as it can charge my Tablets and phones fast. Well worth the 30 bucks I spent at Best Buy for the rapid charger.
surely a 2amp charger is capable of providing 2amps, but if whatever is attached only drawers 1amp then that's what it'll get ? It doesn't force 2 amps down it's throat ? My palm pre 2 charger is 1amp, my touchpad has a 2 amp charger, but my palm pre doesn't charge any quicker using the touchpad charger.
My Gnex does charge really fast using the plug that came with it especially coming from galaxy s2 which takes ages for a full charge.
alphaola said:
My Gnex does charge really fast using the plug that came with it especially coming from galaxy s2 which takes ages for a full charge.
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+1 I found the gnex really fast charging compared to my sgs2. With the sgs2 I always had it plugged in for fear of a flat battery with the gnex the charging is so fast I don't care anymore.
Sent from my Galaxy Nexus using XDA App
AcE XBOX said:
My car charger is a 2amp charger and does approximetly 1 percent a minute. At home I connect it to my HP Touchpad charger and it seems to charge really quick.
But I LOOOOOOVE my car charger as it can charge my Tablets and phones fast. Well worth the 30 bucks I spent at Best Buy for the rapid charger.
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FYI, 1% a min is roughly 1A.
In 1 hour, it would restore 60%, 60% of 1.750A = 1.050A.
Nexus battery is the perfect size to eyeball the inflow rate.
30%/hr = .5A
60%/hr = 1A
60%/30min = 2A
If you think you're charging at 2A, simply time it. Also these are rough numbers and will only be accurate when the battery is low.
I went to sleep last night with the battery at 15%, slept for ~5 hours, woke up, and the battery was only at 50%. Is this normal? Does it take this long to charge for anyone else?
For reference I'm using an HTC charger from a previous Android phone, would using the Samsung charger make a difference?
Yes it seems like too long for too little of a charge. Give the Samsung one a shot.
Your using a charger that at very best pumps out 1amp
The default note 2 charger pumps out 2amps
In other words your charger will take twice as long as it should to charge your phone
Sent from my GT-N7105 using xda premium
If you use note 2 charger,than it can charge to full within 2 1/2 hours.
Sent from my GT-N7100 using xda premium
I agree, the Samsung charger with its 2A is necessary for this large battery if you want it to charge fast.
Handwritten from my GT-N 7100
It's there any harm done to the battery if you use an old charger from a previous Android?
Sent from my GT-N7100 using Tapatalk 2
DanDroidian said:
It's there any harm done to the battery if you use an old charger from a previous Android?
Sent from my GT-N7100 using Tapatalk 2
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I haven't seen any ill effects on any of my phones from using different chargers, only different charging rates.
Sent from my SGH-I317M using xda premium
Refer here..maybe can use as a reference since similar slow charging problem..
http://forum.xda-developers.com/showthread.php?t=1977095
Sent from my GT-N7100 using xda app-developers app
were you charging from mains or pc ? from pc it takes .... ages to charge ( like 1% in 15~30 mins) but from mains it takes more or less 2-2.5 hours to hit 100%.
D4rkShadow said:
were you charging from mains or pc ? from pc it takes .... ages to charge ( like 1% in 15~30 mins) but from mains it takes more or less 2-2.5 hours to hit 100%.
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It's from a HTC wall charger. I changed it to the Samsung charger that came with the phone. Will let you guys know how it goes when I go to sleep tonight.
Will the USB cable make a difference? I have a super long USB cable that I like to use instead of the short default cable that came with the phone.
I know about the 1 Amp / 2 Amp charger ratings, but unlike the original post:
I have my Motorola Xoom 10.1 plugged into the wall, and i use a USB OTG cable from the Xoom to charge my Note 2 overnight (so to only use 1 plug socket).
So i assume this is providing 1 Amp or even less to my Note 2.
I often have it charge my Note 2 from 5% or less all the way to 100% in under the 6/7 hours sleep i get.
Somehow the original posters 35% charge in 5 Hours seems very slow.
with my Samsung box set usb cable, it still takes 8 hrs to charge 100%. sometimes the red led is on but without a single percent charge. I am talking about charging with the usb connected to the laptop. if plugged in power, it takes less that 3 hrs for a full charge.
I remember my previous win7 was perfect, may be the new win8 is having some problem or not, I don't know?
schiwa said:
with my Samsung box set usb cable, it still takes 8 hrs to charge 100%. sometimes the red led is on but without a single percent charge. I am talking about charging with the usb connected to the laptop. if plugged in power, it takes less that 3 hrs for a full charge.
I remember my previous win7 was perfect, may be the new win8 is having some problem or not, I don't know?
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My Xoom must give out some good Amperage if i can get a 100% charge in 6/7 hours then.
The "only" thing that matters is the voltage.
The included charger puts out 5V(+-5%) and 2A.
Too little voltage, and it won't charge.
Too much voltage and you will burn a fuse or the charging circuits in either the phone or the charger.
The phone chargers (no matter what brand it is) are within the limits, so don't worry.
The current (Ampere) shows how much power your charger can deliver at a given time, but the phone itself decides how much current it can take.
A standard USB-port (1.1) gives out 5V and 500mA.
I've built LED cables based on this.
USB 2.0 and higher are supposed to be able to give up to 1500mA under certain circumstances.
My motherboard has a pair of special USB-ports which can recognize cameras, phones, etc. and charge with a higher current and even without having the computer turned on.
While charging through USB-ports a full charge takes ages for me, 6 hours while sleeping will never even charge close to 100%.
On the other hand, charging though the adaptor that came with it or any other adaptor that can pump some juice is blazing fast... 3-4 hours and it's back to a 100%.
Okay, this will sound too silly but this worked for me! Encountered and suffered from the same problem..
It used to take 8 hours to get fully charged...but in time i noticed this silly and weird thing...should work though..
Before putting the phonw on charging, kill all running apps...then when you plug the charger-DO NOT TURN THE SCREEN OFF BY YOURSELF...let it sleep automatically. And it'd get charged lighting fast...it worked for me!
Sent from my GT-N7100 using Tapatalk 2
area5x1 said:
I went to sleep last night with the battery at 15%, slept for ~5 hours, woke up, and the battery was only at 50%. Is this normal? Does it take this long to charge for anyone else?
For reference I'm using an HTC charger from a previous Android phone, would using the Samsung charger make a difference?
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Click to collapse
If i put my Note 2 on charge where its at 25% battery, in 30 mins my battery gets charged to $85%! And you should ALWAYS use the charger that comes with your phone instead of a charger made for another phone. The HTC charger is designed to charge that HTC Phones battery. Each charger is different in the sense it provides different amounts of power. The Note 2 battery is huge so the Note 2 charger is designed to push a specific amount of power to it to charge it in a reasonable time.
For e.g. If you use the iPhone 4 charger to charge an iPad, in 5 hours it will charge the iPad to approx 50%, and if you use the original charger to charge the iPad the iPad will be more than fully charged. Thats because the iPad charger is designed to accommodate the huge battery inside the iPad.
Also i read an article not too long ago that said that alot of science goes behind these smartphone / tablet chargers and how its dangerous for the charger and device / battery if you start mixing and matching chargers.
My $.02 cents!
Sent from my iPad using Tapatalk HD
therockk said:
If i put my Note 2 on charge where its at 25% battery, in 30 mins my battery gets charged to $85%!
Sent from my iPad using Tapatalk HD
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You should go to SC.
60% in 30 mins! Jeez!
Sent from my GT-N7100
from 0% do 100% 2hours 30min. its very fast for 3100mah baterry.
I use my iPad3 charger to charge my N2. It juiced up faster and my N2 does not heat up when it is fully charged.
I use my iPad3 3.1amp in car charger as well when I drives around
Sent from my GT-N7100
Can anyone tell me why it takes so long to recharge my phone ?
I use a charger cable from my computer (usb) to phone while at work --- then I also use it at home too.
Is it only the wall charger that does it fast ? not USB/laptop/computer ?
Last night it took me 10 hours (phone was on but I didn't touch it for 10 hours - internet/wifi/3g was OFF)
why does it take 10 hours ?
Is something wrong with the phone? battery? or is it the charger ?
USB only has a small amount of current that goes through it. Enough to power small USB devices and no more. I believe it's around 500mAH. But your phone is always drawing power, so the excess is what actually charges your battery. Your wall charger is 1000mAH which means there is plenty of current to charge your battery even with heavy usage.
Tl;dr: USB is weak and 10hrs is normal. Wall charger is much more powerful and faster.
Sent from my SGH-I747 using xda premium
damn thanks for the great reply.
Further more, I was at my friends house once, and he has a black berry (same charger as my SGS3) and he passed me this cord to charge and it honestly charged the entire phone from 5% to 90% in like less than an hour...
not sure wtf this was but is it possible ? is it bad for the phone ? for the battery ?
10 hours is not normal. And the average wall charger that comes with your phone is 750mAH, not 1000. The 1000mAH chargers are quick charge ones.
The fact that the blackberry charger worked well on your S3 tells me that you should get a new charger.
where does one find one of the quick chargers to buy ? (1000mAH)
you can find all sorts of chargers on amazon. you can find inexpensive ones at walmart too. i would recommend buying a samsung charger for your samsung phone. hold onto the one that came with your S3, even if it takes forever to charge. just use it to connect to your pc for file transferring, odin, etc.
Even though charging quickly seems good but if you can afford the time then use the one you already have z charging too quickly affects your battery health negatively , a slow charger will make sure your battery stays healthy for a long time , mind it by slow I mean a 750 mAH one not a faulty one in case yours is faulty .
xBeerdroiDx said:
10 hours is not normal. And the average wall charger that comes with your phone is 750mAH, not 1000. The 1000mAH chargers are quick charge ones.
The fact that the blackberry charger worked well on your S3 tells me that you should get a new charger.
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The S3 charger is 1000mAH. I have two of them that came with my phones. And anytime I connect my phone to my computer I can leave it connected for hours and only charge a few percent. This phone just draws a lot of power.
Sent from my SGH-I747 using xda premium
d3athsd00r said:
The S3 charger is 1000mAH. I have two of them that came with my phones. And anytime I connect my phone to my computer I can leave it connected for hours and only charge a few percent. This phone just draws a lot of power.
Sent from my SGH-I747 using xda premium
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thats interesting because i have 4 samsung chargers. 2 came with my old S2's and 2 came with my 2 S3's. the output on all 4 is 700mAH. i got robbed. of course, connected to a PC the output is max 500. even at that, i still get a better charge than a few percent when connected to a PC for hours.
Hey guys. I got my g3 today yay.. And i also got the wireless charger withit. Now i have a question.. Can i leave the phone on the dock overnight to charge from dead or would it be better to just plug it in
Sent from my LG-D855 using XDA Free mobile app
Leaving it overnight is just fine. The main benefit of plugging it in is just faster charging.
The way charging works, is that when the battery is mostly empty, the phone will attempt to draw more current from the charger if it can. This allows it to charge faster in the beginning. As the battery fills up, the phone draws less current.
The wireless charger tops out at about 0.5A of current... Which, imo works pretty well when charging from about 30% and up. The regular charger can provide more current so it can do the job faster.
When charging overnight, charging with the slower (wireless) charger may actually be better for your battery in the long run. I reality, though ...given the short lifetime of tech and also how inexpensive replacement batteries are, this might not matter to you.
Sent from my SHIELD Tablet using Tapatalk
ailima said:
Leaving it overnight is just fine. The main benefit of plugging it in is just faster charging.
The way charging works, is that when the battery is mostly empty, the phone will attempt to draw more current from the charger if it can. This allows it to charge faster in the beginning. As the battery fills up, the phone draws less current.
The wireless charger tops out at about 0.5A of current... Which, imo works pretty well when charging from about 30% and up. The regular charger can provide more current so it can do the job faster.
When charging overnight, charging with the slower (wireless) charger may actually be better for your battery in the long run. I reality, though ...given the short lifetime of tech and also how inexpensive replacement batteries are, this might not matter to you.
Sent from my SHIELD Tablet using Tapatalk
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Thanks for the feedback.. Wasnt sure if it would stuff the charger or not
Sent from my LG-D855 using XDA Free mobile app
Try it a couple of times and see. I have an aftermarket one at work and even thought it is 0.5A and charges for after 30min or so, it heats up the battery and phone for some reason. So i avoid using it.
The phone has been very consistent at stopping charging when plugged in to wall so i see no need to be afraid of using wall charger even overnight. I have been doing this for past 6 months.