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Hey, do you all know a way to charge the phone faster? maybe a kernel or something? It charges so slow and thats the only reason why i would return this phone. It's very annoying.
Solution: Get the charger in the pic below. it's amazing how much faster it charges and it charges the battery that is in the charger as well. 40 bucks.. def worth it.
I have noticed that when my phone battery is really low, if plugged into a usb port via charging cable that came with the phone, the phone still died. It does take a long time to charge though, is this due to the larger battery?
Charging really sucks
I noticed that yesterday more than ever. I was driving for many hours, and the whole time I had my phone plugged in. After a 13 hour day my phone would still not go above 15%. Granted I was using google maps and listening to podcasts on doggcatcher, but my evo never had a problem charging to 100% doing the same thing. Then I noticed the red notification light that turns on while charging was not even on. I turned off the phone removed the battery for a minute, then when I turned it back on and pugged it in the light came back on again. I hope I didnt just get a defective phone.
It's samsung i think. the regular galaxy s phones charge slow too. smh very annoying. the battery has nothing to do with it because I had an extended batter 3200MAH that be charging father than this on the Nexus 1 (HTC).. htc has better changing capabilties
Only way to charge it faster is to turn the phone off when charging. This is not a phone where you can throw it in the charger for 30 minutes and expect a quick recharge to last you through the evening (like HTC or Motorola phones).
Econ212 said:
I have noticed that when my phone battery is really low, if plugged into a usb port via charging cable that came with the phone, the phone still died. It does take a long time to charge though, is this due to the larger battery?
Click to expand...
Click to collapse
USB can provide .5A. The phone, when pushed to the limit can draw more than that which may be why your phone was actually discharging.
---------- Post added at 11:33 AM ---------- Previous post was at 11:32 AM ----------
stepinmyworld said:
Hey, do you all know a way to charge the phone faster? maybe a kernel or something? It charges so slow and thats the only reason why i would return this phone. It's very annoying.
Click to expand...
Click to collapse
How long is long? 2-3 hours for a full charge is normal when on AC power, 4-6 when on USB.
This assumes your are not actively using the phone, aka no gaming, netflix, etc.
i actually think this thing charges fast compared to the evo 3d. Mine charges fully from dead in about 1 1/2 hours.
i use the charger brick from my ipod instead of the samsung one though. It may put out more juice then that jacked up samsung one. that thing stinks, plus causes screen issues
I ran in to this with my EVO when Running Bluetooth, Full Bright and GPS while in the car. I purchased a 2amp charger for the car and have not had the same issues since going to 2.0amp.
Well I have tried this twice, and saw that battery charged faster. (but that's just me... Have not really tested to prove it really makes a difference)
I installed battery calibration from market and did that full charge and unplugged 10x then let drain. When I charged the phone it did it in record time since I had the phone.
We now return you to your regularly scheduled program...
Econ212 said:
I have noticed that when my phone battery is really low, if plugged into a usb port via charging cable that came with the phone, the phone still died. It does take a long time to charge though, is this due to the larger battery?
Click to expand...
Click to collapse
The phone will only draw 450mA from a USB port. It can easily use more than that while running misc. tasks. You should only use a high Amperage charger when your battery is low (1A or higher) and limit USB cable use to when you're just transferring data or when you don't have another option.
Also the phone only uses 650mA MAX to charge the battery. The difference in what the 1A stock charger is able to provide should presumably allow you to run your phone at the same time without reducing the charging current. If this is true than a 1.5-2A charger would be ideal, allowing a fully dead battery to be charged in about 3 hours regardless of use.
BTW, this info is taken based on the work done with the i9100 sgs2. They currently have kernels that raise the charging rates to 550 and 750 respectively.
walord said:
The phone will only draw 450mA from a USB port. It can easily use more than that while running misc. tasks. You should only use a high Amperage charger when your battery is low (1A or higher) and limit USB cable use to when you're just transferring data or when you don't have another option.
Also the phone only uses 650mA MAX to charge the battery. The difference in what the 1A stock charger is able to provide should presumably allow you to run your phone at the same time without reducing the charging current. If this is true than a 1.5-2A charger would be ideal, allowing a fully dead battery to be charged in about 3 hours regardless of use.
BTW, this info is taken based on the work done with the i9100 sgs2. They currently have kernels that raise the charging rates to 550 and 750 respectively.
Click to expand...
Click to collapse
Well we have someone a few post back that claims to charge battery from dead to full in 1 and 1/2 hours.
Mine takes at least 3 hrs to charge. My Nexus S takes 3 and 1/2 to 6 hrs.
I have use chargers ranging from .7a to 2a.
these top-shelf phones tend to user more power than necessary for a lot of functions. first off, if you're rooted try lowering the max frequency with setcpu and / or change the governor to conservative, or (recommended) on-demand with the power-save bias to about 450-700 so it increases to say 800mhz instead of 1200 (or about 250-400 bias for standard usage).
if you use the navigator a lot, you can put it in airplane mode after about 5min of travel and out will cache the rest of your route. gps still works in airplane mode. if you're at work you could always use airplane mode between breaks.
also try setting your display mode to standard instead of dynamic (if not already) when you have no plans to use apps that beg to be eye-candy.
remove unnecessary bloat widgets like calendar, google search, and task manager shortcut (they run services) and kill background data as often as you can.
airplane mode and/or max 500 freq while charging.
if you're using zedomax OC kernel v1 2 or 3, reboot the phone before you leave it idle for extended periods of time because it seems to have trouble underclocking again, our update to the v4.1 beta kernel (or newer) available on downloadandroidrom.com
this post took 8% of my battery
What are the odds we will get SBC coded into our kernel's, or was/is this just a HTC thing?
Mine works perfect. From about 15-20%, if I plug it in the wall, I'll get to full in about 1.5 hours.
wait how you do it?
There's an app 4 the Touch Pro2 called nueBattery2 that'd actually increase the draw from USB from .5mA to 1mA. Is this not possible 4 the E4GT?
The phone has to think it's plugged into AC to ask for more than 450 mah.
I believe it checks this via shorted data cables of the USB cord. The stock charger shorts those cables so the phone knows it can draw more amps. Settings/about phone /status will show you if its drawing 450 (USB) or more (AC). Using a non-oem wall charger can result in (USB) charging instead of AC even if the charger says 1000mah. Using a pure charging USB cable with the data wires setup correctly, plugged into a computer can give you AC charge rate albeit no data connection to your computer.
whatsitsnamenow said:
Only way to charge it faster is to turn the phone off when charging. This is not a phone where you can throw it in the charger for 30 minutes and expect a quick recharge to last you through the evening (like HTC or Motorola phones).
Click to expand...
Click to collapse
+1 on this. Noticed that if I turn the phone off when charging it charges twice as fast.
R1ptide said:
The phone has to think it's plugged into AC to ask for more than 450 mah.
I believe it checks this via shorted data cables of the USB cord. The stock charger shorts those cables so the phone knows it can draw more amps. Settings/about phone /status will show you if its drawing 450 (USB) or more (AC). Using a non-oem wall charger can result in (USB) charging instead of AC even if the charger says 1000mah. Using a pure charging USB cable with the data wires setup correctly, plugged into a computer can give you AC charge rate albeit no data connection to your computer.
Click to expand...
Click to collapse
That is correct. I use a USB cigarette outlet adapter in my car and running navigation and playing music at the same time would kill the battery while charging... until i shorted the two middle pins in the adapter.
walord said:
...i shorted the two middle pins in the adapter.
Click to expand...
Click to collapse
So, would this wrk w/ USB cables, & is there a way 2 still allow sync? Couldja post a pic or instructions?
Related
Where can I get a decent 5V 2A wall charger?
I've searched through ebay, amazon, dealextreme, ncix, infonec, newegg, no avail yet.
erhh..... it's the first item on the search list
http://s.dealextreme.com/search/2A+wall+charger
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If you can order this one, get it. It can charge 2 phones at a time and is considered a rapid charger.
T-Mobile rapid charger
or you can also use one of these http://www.dealextreme.com/p/universal-ac-to-12v-car-cigarette-lighter-power-adapter-2705, with the 2A car charger that you already got
AllGamer said:
erhh..... it's the first item on the search list
http://s.dealextreme.com/search/2A+wall+charger
Click to expand...
Click to collapse
If you look at the 4th picture the "user instruction" clearly says it's 300-500mA. This item is mis-advertised...
The_Biz said:
If you can order this one, get it. It can charge 2 phones at a time and is considered a rapid charger.
T-Mobile rapid charger
Click to expand...
Click to collapse
This one is 2A? I can't find the specs.
AllGamer said:
or you can also use one of these http://www.dealextreme.com/p/universal-ac-to-12v-car-cigarette-lighter-power-adapter-2705, with the 2A car charger that you already got
Click to expand...
Click to collapse
Its output current is 500mA... and it seems a little weird to be honest...
513263337 said:
If you look at the 4th picture the "user instruction" clearly says it's 300-500mA. This item is mis-advertised...
Click to expand...
Click to collapse
After a second read, seems that the "user instruction" is not for that device. The picture on the instruction looks similar but is actually different from the device. So maybe the seller got things mixed up.
513263337 said:
This one is 2A? I can't find the specs.
Click to expand...
Click to collapse
Idk what the output is tbh. But I have several of their chargers and they charge fast. Faster, way faster than the slow stock charger.
____________________
Deebo took your bike too?
The_Biz said:
Idk what the output is tbh. But I have several of their chargers and they charge fast. Faster, way faster than the slow stock charger.
Click to expand...
Click to collapse
If the T-989 circuitry is anything like the ATT Samsung Infuse, ATT Samsung GS2 or the Galaxy S1 variants the charging current is LIMITED by the ROM & hardware and the MAX current for the device limited by the chipset is ~600mah so a higher current charger won't help, it's probably placebo effect.
I believe Entropy512 on the ATT GS2 forum has done some heavy investigation into the integrated chipsets in the phones used for charging these devices and has confirmed these limitations using the manufacturers chipset specs.
He was able to jack up the max charge current about 100mah or so on a couple devices in the kernel. But a larger charger is going to make very little if any difference. The phone automatically current limits to prevent overcharging the battery or at worse an explosion. These batteries are very dangerous at too high current.
Bottom line is you could use a 10amp charger and the phone will only charge at it's rated capacity which a WAY WAY below 2000mah and probably no more than 700mah on these phones.
I'm on the stock rom and these chargers are better than the stock though. The car charger version can charge the phone very fast (within an hour). I know from use that these can charge a stock gs2 faster than the stock charger. I got them because the sensation took 8days 22minutes and 43 seconds to fully charge. And I kept them for the gs2.
The_Biz said:
I'm on the stock rom and these chargers are better than the stock though. The car charger version can charge the phone very fast (within an hour). I know from use that these can charge a stock gs2 faster than the stock charger. I got them because the sensation took 8days 22minutes and 43 seconds to fully charge. And I kept them for the gs2.
Click to expand...
Click to collapse
Electronics 101 says either you are incorrect or something is defective. If something is charging at 500mah (standard Samsung wall charger charge rate) and the capacity of the battery is 1850mah it must take less than 4 hours. 1850/500=3.7hrs (which probably can vary 25% depending on a number of variables). If it fully charged from zero to 1850 in "less than an hour" that means the phone is being charged at a rate of almost 2AMPS/hour. If that is the case (and it is not) your phone would have been a pile of molten smoking plastic because the charge rate of the phone is limited to AROUND 600mah. 2000mah, which is about what a 1hr charge from empty to full would be on an 1850mah battery would wipe out the phone and/or probably explode the battery.
Either your phone battery is displaying incorrect "emptyness" or something else is wrong because what you describe is not possible. Either the 8 days or the 1 hour on an empty battery unless SOMETHING is off.
Really? The phone has its own max of 600mA? You are the first one I heard that has this information. If this is true then it's a little mind blowing... Everybody else is recommending using some higher current charger...
MisterEdF said:
Electronics 101 says either you are incorrect or something is defective. If something is charging at 500mah (standard Samsung wall charger charge rate) and the capacity of the battery is 1850mah it must take less than 4 hours. 1850/500=3.7hrs (which probably can vary 25% depending on a number of variables). If it fully charged from zero to 1850 in "less than an hour" that means the phone is being charged at a rate of almost 2AMPS/hour. If that is the case (and it is not) your phone would have been a pile of molten smoking plastic because the charge rate of the phone is limited to AROUND 600mah. 2000mah, which is about what a 1hr charge from empty to full would be on an 1850mah battery would wipe out the phone and/or probably explode the battery.
Either your phone battery is displaying incorrect "emptyness" or something else is wrong because what you describe is not possible. Either the 8 days or the 1 hour on an empty battery unless SOMETHING is off.
Click to expand...
Click to collapse
Argue after you've tried the charger I mentioned.
Edit: The 8 days was a joke. Saying the sensation is slow.
The_Biz said:
Argue after you've tried the charger I mentioned.
Click to expand...
Click to collapse
Believe what you wish. Either the charging indicator on your phone was/is showing incorrect information (ie: showing discharged when it really isn't so it seemed to "charge faster") or something else is wrong. As I said, the phone is limited by it's circuitry to it's charge rate. There is no way around that.
---------- Post added at 08:01 AM ---------- Previous post was at 07:37 AM ----------
513263337 said:
Really? The phone has its own max of 600mA? You are the first one I heard that has this information. If this is true then it's a little mind blowing... Everybody else is recommending using some higher current charger...
Click to expand...
Click to collapse
Absolutely, it is current limited as is any electronic device especially those using Lithium Ion batteries which can easily explode if charged too fast (note the recent Chevy Volt problems). If it was not limited you could theoretically plug it in to a 10amp DC charger and fully charge it in 10 minutes or less. I know that the Infuse and AT&T i777 GS2 are either current limited at 500 or 600mah, Even if this device was 700mah because it has a larger battery it still can't be charged in anywhere near 1hr from empty to full.
Entropy512 over on Samsung Infuse and now Galaxy S2 i777 boards actually spec'd out the chip on the phone from the manufacturers data sheets as well as verified it by testing. He discovered the charging rate can be modified a bit in the Kernel and did jack it up a few mah.
SOMETHING internal has to limit the amount of current that goes into the battery and when to reduce it to a trickle charge and then shut it off.
This is what happens to a Lithium Ion batter when you overcharge it: http://www.youtube.com/watch?v=vS2hGoJVmlA or this http://www.youtube.com/watch?v=jjAtBiTSsKY or this http://www.youtube.com/watch?v=jjAtBiTSsKY (the last one, a laptop, is my favorite).
Yes, higher rated chargers will help to an extent because Samsung (or any manufacturer) has to conservatively rate it's chargers for safety. Their stock chargers are IIRC rated at 500mah. The phone can still handle maybe 600 or 700mah so a higher rated charger WILL charge somewhat faster if it can produce the 700mah rather than the 500 (or less) mah.
However to charge the phone with its 1850 mah (1.85amps/hr) battery in 1 hr from 0 to full would require approx 2AMPS in 1 hour which far exceeds the circuitry OF THE PHONE.
If it did SEEM TO happen either the phone is showing discharged when it's really 3/4 full or the battery is defective and is no longer able to take a full charge and is showing full when it is really on 1/4 full.
Putting 2000mah (2amp/hr) into this battery which would be what would be needed to charge it in an hour would literally blow it up so the charge rate MUST be (and is) limited by the device itself.
Check out Entropy212 on the other boards for more technical details for the other Galaxy "family" devices. This one is no different.
either way the math might be right, but i doubt that's the case
else how do you explain it actually works?
with a 2A charger it finishes charging faster than with a 1A charger
and either of those are faster than the stock charger
the battery doesn't over heat either, it gets warm just like when you use the stock charger
AllGamer said:
either way the math might be right, but i doubt that's the case
else how do you explain it actually works?
with a 2A charger it finishes charging faster than with a 1A charger
and either of those are faster than the stock charger
the battery doesn't over heat either, it gets warm just like when you use the stock charger
Click to expand...
Click to collapse
I explain it this way: It does not work. It is impossible. It's electronics 101. You can't charge and 1850mah battery with 600 or 700 mills (which is what the phone allows) in 1 hour. Just like you can't turn water into liquid gold.
As I have explained before:
It may LOOK like it's working for any of the following reasons:
The battery is defective and is not fully charging. Maybe it's only charging half way and when charging ends it shows full.
The phone is showing a full charge when it really is not fully charged.
The battery is showing discharged when it really is not thereby taking a short time to charge it back up.
Here is a thread with pretty much proof. This guy has a good HP brand 2amp charger and it takes 3hrs 15 minutes to charge: http://forum.xda-developers.com/showthread.php?t=1349373 which is exactly how it should be.
If the battery charged in 1hr it would get so hot the phone would probably melt. Believe what you want, you cannot charge this device in an hour from fully drained to FULL charge. The internal circuitry will not permit it. It has been documented in the ATT GS2 and ATT Infuse threads exactly what chipset is used and what the current limiting specs are from the chip manufacturers data sheets by a well respected developer. This phone is no different. It's charging rate is LIMITED by the phone to 600-700mah. Maybe you can push it to 3hrs by tweaking the charge rate in the kernel but 1hr is not possible and would be very dangerous.
DUDE!
Try the charger I mentioned and then come back here and tell me how your phone is messed up, reading wrong, charging wrong, stupid, can't read its own charge rate, eats twinkies or whatever.. Jeezus...
The t-mobile branded chargers, charge faster than the stock chargers. I've tried this on a hd2, blackberries, htc sensation and a t-mobile sgs2..... . Some people, boy I'll tell ya.
I have had these car chargers for a year and every phone I've hooked it to, can charge really fast. But I guess there's no way on earth, according to you, this is possible.
T-mobiles chargers are rapid chargers. Even nextel use to sell rapid chargers for their phones. The phones came with a slow charger, and they sold a faster charger for like $20. That was back in the 90's.
And I have 3 t-mobile branded chargers. So I guess all of them and the phones are all damaged.
---------- Post added at 09:43 PM ---------- Previous post was at 09:37 PM ----------
MisterEdF said:
This guy has a good HP brand 2amp charger and it takes 3hrs 15 minutes to charge: http://forum.xda-developers.com/showthread.php?t=1349373 which is exactly how it should be.
Click to expand...
Click to collapse
And since "this guy" has a hp charger, there's no way on earth a person could have one of a different brand that actually charges faster. How dare I argue this with a guy who knows so much....
---------- Post added at 09:47 PM ---------- Previous post was at 09:43 PM ----------
And here, this was the reason I bought them, from this article.
READ!
t-mobiles-new-charger-line-is-surprisingly-interesting-fast-e/
"and all of them promise to charge your handset 20 to 50 percent faster than a standard model"
---------- Post added at 09:48 PM ---------- Previous post was at 09:47 PM ----------
Maybe engadget doesn't know about the hp charger guy and they all have defective phones with defective batteries too?
@MisterEdF
I'd rather believe in the actual proven to work results.
because it's been working exactly like that for the past several phones i've owned
simple enough prove when the phone is plugged in with the stock charger, the battery level (battery %) will keep dropping instead of charging if GPS, Bluetooth, Screen, and/or GPS is constantly ON, the battery will never charge, it will just run dry eventually
reason why you see many members reporting it takes them 9 hours to charge or 18 hours to charge
the phone is draining the battery faster than it can replenish itself
in the other hand if you use a more powerful charger, 1A or 2A then you will actually see the battery gain charge (gain %) as the phone is in continue use.
with a 1A charger the battery level remains pretty much flat during charge, with all the features enabled
with a 2A charger it gains battery level, even when all the features are enabled
here's another point of view...
with the stock charger the battery loses 3% in 15 minutes with all the features enabled
with the 2A charger the battery gains 3% in 15 minute with all the features enabled
the only way for the stock charger to gain 3% in 15 minutes is to turn off GPS, turn off WiFi, turn off Bluetooth, and keep the screen off
Does that make sense using your math? No, but that's real life vs. math equations
And omg, look - T-Mobile branded car charger.
Even t-mobiles description says "·Charge faster while on the go"
Holy ****!
Hey all, question here about chargers.
I have 3 chargers at my disposal, a Samsung travel charger @0.7A, included charger block @ 1.0A, and my HP Touchpad block @ 2.0A.
The touchpad charger charges from empty to full in 3h15m, uninterrupted. Not blindingly fast, but good.
The included one takes around 4+ hours.
The travel one is so slow, check out the screenshot below, over 5 hours and at 94% only.
Question is, is there any detriment to using the non standard included charging brick or can I use the higher amperage charger safely?
Thanks
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Sent from my SGH-T989 using Tapatalk
mettleh3d said:
Question is, is there any detriment to using the non standard included charging brick or can I use the higher amperage charger safely?
Thanks
Sent from my SGH-T989 using Tapatalk
Click to expand...
Click to collapse
None whatsoever.
ive been reading that the phone is capped at ~0.65A for charge rate
@mettleh3d
if you had turned off WiFi it would probably have reached 100% before 5 hours using the 0.7A charger
using the included 1A charger it takes exactly 3hr+45m to go from 0% to 100% measured
AllGamer said:
using the included 1A charger
Click to expand...
Click to collapse
Was I cheated by T-Mo? The charger that came with mine is labeled "travel charger" and is .7A.
Actually guys, there are drawbacks to using higher amperage.
The standard charger of 1.0 amps was bundled with the battery because it was engineered that this combination would yield around 300 charging cycles before the battery starts losing it's efficiency.
The faster (higher amps) a charger you use the faster your phone will charge. However, fast charging cycles negatively affect the longevity of the battery. Fast charging cycles also will severely increase the charging temperature of the phone and its battery and depending on how high it gets, it may be detrimental to the phone or battery. The higher amps the charger is, the quicker the battery will start being less efficient. Put in other words, if you use a 2 amp charger every day, the battery may only last 200 charging cycles before you start noticing that your battery is getting weak.
Conversely, if you use a lower-specced charger than the 1.0 Amps Samsung provided, your battery longevity may improve. I do not have numbers exactly but if you are interested, go read on the subject. My guess is if you use the 0.7 amp charger, you may be able to successfully get 320 or 330 charge cycles out of your battery. Again, don't quote me on these numbers.
I'd suggest for every-day usage you continue using your 1.0 Amp charger that Samsung provided. For travel or on the spot (when you quickly need battery juice) feel free to use the 2.0 amp charger. As long as you don't use the 2.0 charger every day, you are fine. Every now and then is perfectly acceptable.
thanks alienz, was hoping for a detailed response like this.
Technically phones have regulators that only allow an amount of amps to be charged with. But I would only charge with the Samsung included one. Like I tried to use Apples charger block but it somehow charged my phone slower
Sent from my SGH-T989 using XDA App
yup, i can confirm from experience from my previous phones
it's mostly the heat that damages the battery, it doesn't really affect the phone itself
}{Alienz}{ said:
The faster (higher amps) a charger you use the faster your phone will charge. However, fast charging cycles negatively affect the longevity of the battery. Fast charging cycles also will severely increase the charging temperature of the phone and its battery and depending on how high it gets, it may be detrimental to the phone or battery. The higher amps the charger is, the quicker the battery will start being less efficient. Put in other words, if you use a 2 amp charger every day, the battery may only last 200 charging cycles before you start noticing that your battery is getting weak.
Click to expand...
Click to collapse
IMO my time is worth more than a few extra cycles of a battery. Just pick up a few extra ones. Not like the OEM will last forever if you trickle .001 A into it every time.
+1
madman604 said:
IMO my time is worth more than a few extra cycles of a battery. Just pick up a few extra ones. Not like the OEM will last forever if you trickle .001 A into it every time.
Click to expand...
Click to collapse
i carry always a spare pack with me
and an extra one is always ready in the office, and another at home, and one more in the car, i keep swapping the car one more often just because it's winter and it's also the one that will get charged the least if i leave it in the glove box
AllGamer said:
i carry always a spare pack with me
and an extra one is always ready in the office, and another at home, and one more in the car, i keep swapping the car one more often just because it's winter and it's also the one that will get charged the least if i leave it in the glove box
Click to expand...
Click to collapse
That thing you said about heat...
Sent from my SGH-T989 using Tapatalk
mettleh3d said:
That thing you said about heat...
Sent from my SGH-T989 using Tapatalk
Click to expand...
Click to collapse
really cold batteries dont work.
First a little ohms law: I = V / R. Amps(I) = Volts(V) divided by Resistance(R)
The phone charger probably puts out 5 Volts (mine does). The resistance is determined by the phone. So the charge current is not going to change just because you have a 2amp charger vs a 1amp charger. The only way to force more amps into the phone is to increase the voltage of the charger. For example say the phone resistance is 5 ohms, then the charger will put out 1 amp (5V/5R). To charge at 2 amps, you would need to up the voltage to 10 volts. DO NOT DO THAT! YOU WILL DISTROY THE PHONE!
It is also probable that the phone has an internal charging circuit to control the actual current to the battery, so that if you leave the charger plugged into the phone, the battery does not overcharge. That circuit is going to cut off the voltage to the battery when is senses the battery is fully charged.
If the phone is trying to pull more amps then the charger can provide, the charger will be getting quite hot. As long as the charger is not hot, then it is providing enough current for the phone to charge properly.
While your logic is sound, the HP touchpad charger definitely charges the device faster than the included brick.
The phones internal charging circuit will only draw as many milliamps as its designed for.
If its designed to only draw 750mA because thats all the circuit is designed to draw max on A/C then thats all it will draw off the 2000mA adapter.
The speedier charging is a placebo effect.
Just because a power source can supply it does not mean the device will use it all.
http://forum.xda-developers.com/showthread.php?t=1332522
read this. exhaustive testing and info !
madman604 said:
http://forum.xda-developers.com/showthread.php?t=1332522
read this. exhaustive testing and info !
Click to expand...
Click to collapse
A faster charge off the OEM adapter that outputs 750mA as opposed to a usb port that outputs 450-500mA max is not new news or surprising and makes total sense
This also does not negate my statement of the device will only charge as fast as the circuit allows it to. so if its designed for 750mA max, charging from a 2000mA charger will yield the same charge in the same amount of time but with a placebo effect, because users think bigger must mean faster, with out taking into account the basics of charging circuit mechanics and basic properties of electricity and current.
Your phone will only draw as much current as it needs to charge the battery, and if the circuit only needs 750mA, it is not designed to work with any more, then thats all it will pull, always. No exceptions.
I can test with all 3 chargers and post my results.
They will be from 0% to 100% no breaks, on airplane mode, and i wont touch the device other than to monitor progress now and again; probably overnight. battery indicator pro shows what time i plugged in and what time it reached 100%, i'll take screenshots throughout.
While I don't refute the circuitry inside and the rules they obey (im an MAE from UCLA), i really want to show that charging time is decreased with the 2A.
I can think of a couple of reasons it might charge slower with the 1amp charger.
1. The phone will pull more than 1amp when charging. I doubt that it does. I think the nominal charge rate is somewhere around 750mA.
2. The 1amp charger is defective. Maybe it only puts out 500mA. These little chargers are pretty realiable, but out of the millions they make, a few defective ones may get out.
3. The phone was not in the same state when you did the tests. For example, if you are overclocking, maybe you had different clock rates or governer selected. Or maybe there are some background apps, waking up, and slowing the charging time.
4. You are mistaken about how long it takes to charge.
-LF
When I first got this phone I noticed it charged pretty slow. 5 hours to get to full from 0% but it then got a lot worse. Over night it would only charge from like 18% to 41 so I got a new charger and wall adapter and that seemed to fix it for a couple days but now it is charging slow again. From 70% to 100 it takes about 6-7 hours. Anyone else experiencing this?
The only time I've heard of that happening is when people fail to 'condition' their lithium battery properly before normal use.
In other words, upon getting your new phone, and/or battery, you're suppose to allow your battery to fully discharge and then fully recharge 3-5 times to condition your battery before plugging it back in half way through discharge.
It's usually what the carrier sales clerks are suppose to tell you when purchasing a new smartphone.
Here's a simple article on the subject:
http://www.ehow.com/how_4797458_condition-cell-phone-battery.html
Sent from my SPH-L710 using xda app-developers app
drewmonge said:
The only time I've heard of that happening is when people fail to 'condition' their lithium battery properly before normal use.
In other words, upon getting your new phone, and/or battery, you're suppose to allow your battery to fully discharge and then fully recharge 3-5 times to condition your battery before plugging it back in half way through discharge.
It's usually what the carrier sales clerks are suppose to tell you when purchasing a new smartphone.
Here's a simple article on the subject:
http://www.ehow.com/how_4797458_condition-cell-phone-battery.html
Sent from my SPH-L710 using xda app-developers app
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Click to collapse
I never had/has/have doing it. And I dont have battery issues.
I think the battery calibration/cycle..etc is just a myth.
Go to the store and check for warranty.
Sent from my SPH-L710 using Tapatalk 2
Could it be a rouge app causing it to take so long to charge? I noticed today Google maps was using a lot more of the battery than usual. Almost as much as the screen. I tried force stopping but it just starts right back up again. Any ideas on how to fix the maps app? I have a feeling that is what is causing it.
I have this problem. It is very annoying and I have no idea what causes it. It doesn't happen all of the time though.
rbtrucking said:
Could it be a rouge app causing it to take so long to charge? I noticed today Google maps was using a lot more of the battery than usual. Almost as much as the screen. I tried force stopping but it just starts right back up again. Any ideas on how to fix the maps app? I have a feeling that is what is causing it.
Click to expand...
Click to collapse
Just sounds like a bad install of something. I would do a factory reset through the stock recovery, and make sure to wipe dalvik cache.
My phone has started charging slowed as well, but mostly when connected to the computer. I made sure my usb ports were set to not allow the computer to shut them off to conserve power and it seems a bit faster. As far as charging and discharging ect ect I don't do that and never had a problem with slow charging and even the couple of times I tried it, the battery life never really improved. So think it is needed and some think it is a waste of time.
Charging via a computer USB port will always be slow when compared to the higher current capacity of the included AC charger. Computer USB ports have a lower current rating.
Make sure your using the charger that came with the phone, not all chargers are created equally.
There's also been some talk about the quality of USB cable being used, but I haven't found that myself yet.
Little bit of info...
I have tried numerous chargers while at work here (Technician) and there are some issues.
Samsung is funny on which chargers it accepts. Very funny.
1. Stardard charger that comes with the device will charge best. (Obvious I know) Using wall charger. (Full charge in 3.5 to 4 hours from 1%)
a. Using USB end plugged into PC while charging takes typically from my tests double the time to charge. (I'm guessing that data connection to PC is slowing the charge. (Full charge in 6 hours from 1%)
2. 3rd Party Generic charge cables (usb cable only) still charges device however stardard power draw is lower and does not charge in a decent time period.
a. Some 3rd Party usb cables plugged into a pc showed charging however they did not keep enough of a draw to actually charge my phone. I lost battery instead of gaining.
3. LG chargers did nothing for me. Couldn't get a decent charge.
Motorola chargers gave me the best charge besides the original.
Chargers with replacement tips... what can I say. They didn't seem like a good idea and weren't. I had too many issues and at times had some overheating issues. Luck of the draw me thinks.
3rd party wall chargers were hit or miss. A few did seem to give me a decent charge, others gave me a very slow trickle charge taking anywhere up to 8-9 hours for a full charge from 1%
All in all... it's a crap shoot using 3rd party cables. It's all based on voltage output and Samsung likes to change things alot. You will still get a charge but who knows the length of time it will take.
Oh and car chargers... typically only good for keeping it at the same level you plugged it in at for short drives. Long drives obviously work much better.
Hope this helps.
About charging: I have noticed that micro USB cable that come with S3 is really bad - it is loosing a connection to PC,and, beside that, I have noticed several times slow phone charge... Accidentally went to settings- battery - when I was on AC charger and saw in settings that phone is actually charging in USB mode!!! Wtf??? Disconnect usb from bottom end (at charger side) and reconnect and then on phone says " charging - AC" ... So,conclusion is that you check your phone charging status when you put on charger,maybe it is charging in USB mode and because of that phone is charging slower than it should on regular AC power.
The only battery issue that i have noticed is when i use my computer to charge it takes forever but when i use the factory wall plug and cable it charges quickly with no issues
Excellent post supercholo. Really helpful. I was starting to think my phone was broken.
Anyone got any experience with using an ipad charger on an sIII. I know an ipad wants a lot of power to charge.
FYI These are the voltages listed on my chargers;
Apple ipad1 charger 5.1v 2.1a
SAMSUNG s3 wall charger 5v 1a
Samsung Galaxy i9000 wall charge 5v .7a
supercholo said:
Little bit of info...
I have tried numerous chargers while at work here (Technician) and there are some issues.
Samsung is funny on which chargers it accepts. Very funny.
1. Stardard charger that comes with the device will charge best. (Obvious I know) Using wall charger. (Full charge in 3.5 to 4 hours from 1%)
a. Using USB end plugged into PC while charging takes typically from my tests double the time to charge. (I'm guessing that data connection to PC is slowing the charge. (Full charge in 6 hours from 1%)
2. 3rd Party Generic charge cables (usb cable only) still charges device however stardard power draw is lower and does not charge in a decent time period.
a. Some 3rd Party usb cables plugged into a pc showed charging however they did not keep enough of a draw to actually charge my phone. I lost battery instead of gaining.
3. LG chargers did nothing for me. Couldn't get a decent charge.
Motorola chargers gave me the best charge besides the original.
Chargers with replacement tips... what can I say. They didn't seem like a good idea and weren't. I had too many issues and at times had some overheating issues. Luck of the draw me thinks.
3rd party wall chargers were hit or miss. A few did seem to give me a decent charge, others gave me a very slow trickle charge taking anywhere up to 8-9 hours for a full charge from 1%
All in all... it's a crap shoot using 3rd party cables. It's all based on voltage output and Samsung likes to change things alot. You will still get a charge but who knows the length of time it will take.
Oh and car chargers... typically only good for keeping it at the same level you plugged it in at for short drives. Long drives obviously work much better.
Hope this helps.
Click to expand...
Click to collapse
Very slow charging with OEM charger.. i9300
This is a fact. The OEM wall charger surely has some issues. Though 1amp output, as claimed on th specs chart, my i9300 charges super slow. From 80% to 100%, it takes nearly 3 hours.
So, i switched chargers and used my S2 and Note OEM wall chargers. And voila, the phone charges super fast. I even ordered a new OEM charger for s3 with the data cable included and the same issue occured.
This has worsened ever since the JB update. So I am now using the S2 charger and very satisfied.
SWTICH OVER GUYS!! OEM charger is useless,,,
I have had my phone on USB to computer charging for 7 hours, with a one hour break to watch Dexter. I was at 18% and I am now at 69%. I think I will have to use the wall adapter because this is just ridiculous.
Usb to pc will always be slow buddy. It outputs 500ma while d wall charger is 1 amp
I found my Usb cable faulty. Sent for replacement.
Cheers
→→Android▶◀▶◀ ROCKS!◆◆◆
Without reading all the post. I have had this same problem. Took phone to sprint, they tested the battery and it was bad. Got a new one and good to go..
The wireless charging seems more like a gimmick rather than an actual option for recharging the phone. If I leave the screen on (with a screensaver), the charging process from 70 to 100 will take forever (buh bye bed table clock), and if I use wireless charging on a car craddle (I adapted one), it doesn't supply enough power to even maintain the charge while driving with GPS + 50% Brighness + 4G.
Yes, it discharges while recharging. It's ridiculous!
When I had the G2, I remember few kernels that allowed the user to change the charging current in different scenarios, and one of them was wireless charging. I think it is limited to 1A stock, and the USB charges at 1.8A.
Is it a known issue, or is my G3 problematic? I also feel it takes a long time to recharge even on cable. My G2 used to jump easily to 60% within' minutes, from 15%. G3 seems to sip a lot, and recharges too slow.
--
and on a related note, sometimes when I place the phone on the wireless craddle, it says "Charging wirelessly" or "slow charge, center the phone bla bla bla". But most of the time it doesn't say anything at all, and just charges. Should I consider it slow or normal charging?
---------- After a brief test, it seems that it doesn't report if it's charging slowly or normally, horizontally. Even with screen rotation disabled, it just refuses to report. Weird.
How can I see the charging current? Is it even possible (I used to be able to do so on my Galaxy S3)?
You can use CurrentWidget: Battery Monitor from the play store to look at the charging rate.
I seem to be getting 0.7 Amps with my wireless charger which is just about okay, but yeah it will take time to charge if you have screen powered on.
if4ct0r said:
You can use CurrentWidget: Battery Monitor from the play store to look at the charging rate.
I seem to be getting 0.7 Amps with my wireless charger which is just about okay, but yeah it will take time to charge if you have screen powered on.
Click to expand...
Click to collapse
It says 0mA, wirelessly or cable. What the heck?
Hello!
Charging problems started to occur a month ago on my phone. The problem is that it charges really slowly, but other times normally.
I experienced that if I plug in the phone when the battery is between 20-60% it charges super slowly.
Sometimes it speeds up but more often not.
Here are some screenshots that show that sometimes it takes like 6 hours to charge and sometimes it basically just hovers around a percentage and doesnt do anything. Gets like 10% overnight.
On the second picture you can see that it charges normally till it reaches 55% then it slows down to like 5%/hour speed.
I noticed this while the phone was draining battery even tho it was plugged in while using it.
I bought a new OEM battery and its the same with it aswell. Some chargers charge it quicker, some slower, but the problem occurs with every charger.
What do you guys recommend me to do?
Thanks a lot!
is your charger 2 Ampere as it should be?
U can also try to recalibrate the battery deleting the data/system/batterystats.bin file
haget83 said:
is your charger 2 Ampere as it should be?
U can also try to recalibrate the battery deleting the data/system/batterystats.bin file
Click to expand...
Click to collapse
Thanks for the reply!
I have used many chargers since I have this problem, but mostly the one that came in the box.
Ill try deleting that file if its possible withouth root.
Edit: It seems i need root for it, so its not an option for me.
Kr3Ep said:
Thanks for the reply!
I have used many chargers since I have this problem, but mostly the one that came in the box.
Ill try deleting that file if its possible withouth root.
Edit: It seems i need root for it, so its not an option for me.
Click to expand...
Click to collapse
Actually brother initially same problem occured with me and it was persisting on the same way load since i come to change my charger now before i was charging it with blackberry passport charger it was really cool and even charges it faster that i mean around 50% faster than the previous charger, but now days m befitted with moto g4+ which meets to charge my lg g3 around 65% faster
But brother dont use any local company pr anypther charger as it may damage the phone display which may come to cost you at high
There are going to be 3 main factors that you want to address:
- Battery
- Charger/charging cable
- Software
It seems you have already addressed your battery. That's usually the #1 culprit, but you've already replaced it so you can rule that out.
The next is the charger and charging cable. This is often overlooked. The stock charger is 5 volts and 1.8 amps (5v 1.8a). Before more advanced smart phones were developed, almost all USB chargers never produced more than a 5v 1.0a charge (most were 5v 0.5a). So you want to ensure you are using at least a 5v 1.8a charger. (I even use my Fire Tablet charger on my G3 which is 5.1v 2.2a, and that works great too). Note that all USB chargers have their output volts/amps printed on them somewhere (usually in very tiny print). The USB cable you are using matters too. The thinner the wire gauge and the longer the cable is, the less power is transmitted. For example, if you're using a thin and cheap 6 foot (2 meter) USB cable on a 5v 2.0a charger, you may only be getting 1.0a of charge from it. If you use a thicker, shorter, and more expensive 3 foot (1 meter) USB cable on that same charger, you ensure you get that full 2.0a of charge (or close to it). The two factors to look for in a USB cable is length (length = resistance = less amps) and wire gauge (not insulation thickness).
The last is software. If you have any way to backup and restore (ie nandroid) your ROM from recovery, I recommend doing that first because it's easy. If you backup your current ROM, factory reset, and the issue persists then you know its the charger/cable. If the issue is gone, then you know it's something in your current ROM. If you do not have access to backup/restore features and/or do not have root, then next you can use the Android OS Battery stats to carefully go over what could possibly be draining so much power when the phone is on or off. There are also several apps that will help you determine where the battery drain is coming from. Note that software can not prevent your phone from charging, but it can drain power so fast, that there is not enough left over to charge the battery. This is especially bad for our G3s because they easily overheat if they are charging and heavily discharging simultaneously.
Hope that helps! Good luck! :fingers-crossed: