I have browsed the threads on the issue with the bump charge, but not a lot of people complaining about it so it made me think there was a fix. I cannot find the fix if it exists. The only issue I see people complain about is the length of time it takes to charge, but I'd rather just get a FULL charge with the phone on instead of having to charge it while its off....
I haven't heard much about it in a while, either, but did notice this with 2.2: Bump charging still works (as in, the LED turns red again when I turn off my phone and charge it) but the charge doesn't last as long as it did on 2.1...UNTIL I plug in my phone again. Then it takes a while to charge back up to 100, but then stays charged. It seems like bump charging now tells the phone that it can hold more charge, but it doesn't happen until you charge up the phone again while it's on.
I get a lot better life just charging the phone while it is off, at night.
Sent from my ADR6300 using XDA App
People at androidforums reported much better charging on the ruby 1.1.1 rom.
forum.xda-developers.com/showthread.php?t=714471&highlight=battery
thread title is Battery Recalibration
im trying those instructions. I hope that deleting the battery stats will force the phone to "bump" charge while still turned on rather than turning it off to get the extra juice
I've tried the battery recalibrate thing, didn't seem to do much for me...
...
Bump charge still works.
The kernel lets the battery charge only so far, and if you really really really think about the bump charge solution, it is simply "charging with the power off". Then the kernel is not so much in charge.
Ironically, if you charge with the power off, and then you turn it on but leave it plugged in, you will start expending the battery even though you never unplug it. It will ultimately settle at the level that a powered-on-not-bumped battery would settle at fully charge.
Related
Does anyone have a link for the thread that discussed the correct way to wipe battery stats when upgrading to a new Rom? I remember it went something like drain dead, charge to full, drain dead again then charge to full and wipe stats. I can't remember the complete process. Thanks for the help.
Sent from my PC36100 using XDA App
I've seen a couple different threads on that here, one saying discharge fully then charge while powered off, and the other saying to do a full charge "conditioning cycle". I did the latter and it seems to have made a difference.
Here's what I did:
Charge the phone fully with it powered on
When fully charged, disconnect cable
After green LED goes off, power the phone off
When phone is fully powered off, reconnect cable, amber charging light should be on
When LED goes green, disconnect cable
Repeat previous two steps 10 times
After 10th cycle, boot into recovery and wipe battery stats.
I am using Amon Ra recovery which has the wipe battery stats option under the Wipe option. I never did this when I had Clockwork recovery installed, so I don't know if the option is in the same place.
Being an electrical engineer, I find this business of battery conditioning interesting, along with the Ni-Cd "memory" vs. Li-Ion "no memory" issue. If anyone has found a decent physics-based explanation as to why these things do or do not have any basis in fact, I'd appreciate a link. Yes, I'm too lazy to Google it at the moment.
Hmm, I may have to look into this again. I charged my phone all night (powered off) and unplugged it this morning. I did nothing with it this morning but turn it on and look at it, then put it in standby (quick press of power button). It lost 16% of charge in less than 2 hours!
I'm running BS1.2 with the Baked1 (low voltage/best battery) kernel.
Damn, just installed System Panel and found that my CPU is at 100% constantly!
I'm trying this now. The longest I've pushed my battery was 22 hours... and that was with 39 minutes of screen on time, lol. In standby almost the entire 22 hours....
Ok, I believe my issue was related to a camcorder problem, my CPU usage has dropped back to normal levels after fixing that separate problem. After my battery recharges fully I will see what happens with the charge.
the other methods to do "calibrate your battery" (which isnt really calibrating the battery but the battery stats of the phone so it can accuratly judge when it stops and starts charging)
1) charge the phone to full
2) unplug and use phone till it shuts off from no battery (do not plug in until it shuts off)
3) charge phone to full again with out unplugging till 100% (check under about phone > battery it shoudl say full charge there)
this should reset the battery stats.
the last method is one from HTC
1)Charge the phone for 8 hours uninterupted with power on
2) turn off the phone and charge for an additional hour
3) turn ont he phone unplug it and let it sit for 2 minutes then plug it in for an additional hour.
all 3 methods listed should help. I personally dont like the x10 method because it has the potential and basically over charges the battery to make sure it is acctually at a full charge. It is much faster then the other 2 methods though so to each there own.
Dont waste your time on...
plug/unplug 10 times. It really doesn't recal the battery.
the unplug/plug 10 times.
1. Phone on...charge until green light comes on. Immediately unplug and turn phone off.
2. Plug phone back in until green light comes on again. Immediately boot into Recovery and wipe battery stats.
3. Use the phone on battery until dies.
4. recharge phone to 100%
You are good to go!
If I tether during the day (5+ hours) a lot, is it bad on my battery? Isn't that like a constant charge or does once the LED turn green it stops trying to charge?
Thanks.
fldash said:
If I tether during the day (5+ hours) a lot, is it bad on my battery? Isn't that like a constant charge or does once the LED turn green it stops trying to charge?
Thanks.
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the evo doesnt do a trickle charge so when the light turns green it stops, this is why you will almost always drop 1-5% battery rather quickly.
Are you sure? My light has been green for a while, and my phone battery status says 'Full'.
fldash said:
Are you sure? My light has been green for a while, and my phone battery status says 'Full'.
Click to expand...
Click to collapse
There's a lot of confusion over how the battery / charging circuit works and how it reports. My advice is to just charge until it's green and full, then unplug it. If you leave it plugged in all night, unplug it for 10 mins in the morning, then plug it back in to top off.
That doesn't really help me SilverZero, my question is only if leaving it tethered (which means connected to USB) is bad for my battery.
Well on mine i would check it every once in awhile and i would see that once it get downs to under 90% that it would charge again till it recognized that it was full again. So based on that i dont think you should have to worry about it. It seems to only draw the charge when needed. I also leave mine plugged in alot when im home so its good to go when i leave and havent noticed a loss of battery life at all.
You guys don't want the charger to trickle charge. Li-Ion does not accept overcharge, even 0.01C (15 mA on the stock Evo battery) will cause it to vent and probably combust.
So does "calibrating the battery" calibrate the phone or the actual battery?
I ask because I have 3 spare batteries, wondering if I have to do this for each of them??? They are all standard size, one of them OEM
Problem:
I have been reading as many posts as possible but I haven't come across my exact situation. I apologize if this is posted elsewhere.
I am running a rooted Dinc using CyanogenMod 7.0.3. If I charge the phone while it's powered on, the amber led turns green as soon as the battery indicator hits 100%. However, recently I've noticed that if the battery is close to being full, say 90%, and i power it off to charge it, it actually takes longer for the amber led to turn green. It might take 20-30 minutes longer.
I've also noticed the amber light turn green when the indicator only showed 92%. In trying something different I also noticed that if I charge the phone while it's powered on, then turn the phone off, the led goes amber and takes another 20 minutes to turn green again (I might be accidentally bump charging in this example but I'm not sure).
Attempted Solution:
I've read that a battery recalibration might help. I tried one method that requires the battery to be pulled after a full charge, but my phone won't boot while plugged into the wall if there's no battery. Then I tried booting into recovery, where I found an option to reset the battery stats... which I just did about 5 minutes ago.
I'm going to see how things go tomorrow, but is this normal? Has anyone else experienced these things? Thanks.
Logan176 said:
Problem:
I have been reading as many posts as possible but I haven't come across my exact situation. I apologize if this is posted elsewhere.
I am running a rooted Dinc using CyanogenMod 7.0.3. If I charge the phone while it's powered on, the amber led turns green as soon as the battery indicator hits 100%. However, recently I've noticed that if the battery is close to being full, say 90%, and i power it off to charge it, it actually takes longer for the amber led to turn green. It might take 20-30 minutes longer.
I've also noticed the amber light turn green when the indicator only showed 92%. In trying something different I also noticed that if I charge the phone while it's powered on, then turn the phone off, the led goes amber and takes another 20 minutes to turn green again (I might be accidentally bump charging in this example but I'm not sure).
Attempted Solution:
I've read that a battery recalibration might help. I tried one method that requires the battery to be pulled after a full charge, but my phone won't boot while plugged into the wall if there's no battery. Then I tried booting into recovery, where I found an option to reset the battery stats... which I just did about 5 minutes ago.
I'm going to see how things go tomorrow, but is this normal? Has anyone else experienced these things? Thanks.
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Click to collapse
The kernel and the hardware charge it in different ways. That's why there are differences. DInc is famous for ending charging before the battery reads full. There's already a thread on that. there's not much point in getting hung up on how that thing charges. Be glad yours isn't like mine; a battery that discharges faster than it charges. Seriously.
loonatik78 said:
The kernel and the hardware charge it in different ways. That's why there are differences. DInc is famous for ending charging before the battery reads full. There's already a thread on that. there's not much point in getting hung up on how that thing charges. Be glad yours isn't like mine; a battery that discharges faster than it charges. Seriously.
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Click to collapse
Before I had a fast charge kernel (thanks Chad!) Using GPS with the stock VZW car charger, my battery would go down while it was on the charger!
Sent from my ADR6300 using XDA App
On AOSP roms, the LED will turn green at 90% and charge slower from 90%-100%. Perfectly normal, and I think on any rom it will charge slowly from 90%-100% to protect the battery.
The battery will charge further when you turn the phone off, what you described is what's known as bump charging. If you do this, you should notice a slower drop from 100%-90% than usual, because the battery is charged to a "true" 100%. When the phone is on and charging (above 90%), it simply keeps the battery above 90% even if it says it's fully charged, and this is why the inc is notorious for the quick 100%-90% drop.
If you do a bump charge and then clear the battery stats and use the battery calibration app will you need to bump charge again or will it know what the true 100% capacity is and keep the droid lasting longer. Not noticing much of a diffrence when i went from 1300 battery to a 1500. May get a bigger batter that'll fit the stock battery door cause I'm trying to get the best battery life i can get.
Thanks guys, I appreciate the help. I think something else that has thrown me off is that before I rooted the phone I wasn't able to see the actual battery percentage in numbers... all I could see was the battery icon. Things are now making more sense.
After recalibrating my battery I bump charged the other day and I was able to get almost 2 days out of my phone on light usage. Without bumping, I was able to end my day yesterday at 50% under my normal usage. Which is a noticeable improvement. Normally I end the day with about 10-20%. The big test will be once I go back to work next week. The cell reception is real spotty in my classroom, which I know makes the cell radio work harder.
Thanks again.
I found a lot of answers I was having about battery charging in this thread:
Your battery gauge is lying to you (and it's not such a bad thing)
I haven't had any issues with my stock, un-rooted Epic Touch (purchased day 1) until two days ago. I plug the phone in to charge, and when it is actually around 70-90%, it gives me the notification that the battery is 100% with the blue light. When I unplug the phone it instantly shows the actual percentage - somewhere between 70-90%. It started two days ago, when I woke up and was confused as to why it "dropped" down to 74% within 8 minutes of use off the charger. I have now come to realize that the phone actually stops charging when the "false 100% notification" activates. If I unplug and replug it back in, it starts charging again... until it decides to notify me that it is at 100% again. Any ideas as to why this is happening? Do I have a bad battery, bad charger, or is something else crazy-stupid going on?
Thanks for any feedback you can give me. Merry Christmas everyone!
If it were me, I'd try an old-school Evo 4G-style calibration. Run it down until it dies, charge it to full while leaving it off, pull battery for about ten seconds, charge it until reports full again, then turn it back on.
Ok cool. I'll try that and see what happens. Thanks for the quick response.
I would also try badass battery from the market. Its free and may show you some odd app or what part of the system is draining it.
You can also use better battery stats from here on xda.
Sent from my SGSIIE4GTuvwxyz....should I touch my nose or walk a straight line now?
I was using "Battery Status Bar" but just switched to Badass. Thanks for the tips.
Sent from my SPH-D710 using xda premium
below 90% this idea on why its doing this does not apply but it COULD be related.
once you get above 90% its very difficult to tell when a lithium cell is "fully charged" and its VERY easy to over charge them.
this is why car chargers kill batteries in the old days of lithium (should not do this any longer)
when your over 90% the circuitry "CAN NOT" determine if the battery is 100% or not until it "tries to charge" the battery a little.
once it tries to charge it can then determine that yes its 100%
problem is if your already at 100% you just over charged the battery (very bad for lithium cells)
now once is meaningless but do it a dozen times every week and you might knock 6 months or more off the life of that cell.
this is what car charges do much of the time. everytime you "turn the key off then on" you "restart" the charger (unless your car leaves the circuit live when off some do some don't)
each time it does this it has to "charge a bit" to see if its charged or not IE overcharging the battery.
SO what they have done on some devices is arrange it so if the charge is 90% or over IE that range where it can not "tell" without "charging it a bit" it simply refuses to charge the phone. it says "full"
until power drops below 90% then it initiates a normal charge sequence.
its possible this is whats happening? ? I really don't know just an idea.
Useful info about the battery. Probably not the issue though.
I tried letting it die, turning off, charging to "full" - turned it back on and it was at 79%. Looks like I'll be contacting Sprint tomorrow. Of course this would happen when I have to travel.
Turn off your phone and recharge until its says 100% or blue notofication . Then pull the battery out including charger so it has no power for more than 60 seconds. Put back battery and reboot and your percentage should be more accurate.
Sent from my SPH-D710 using xda premium
That's what wolfkstaag said to do, but I'll try with the battery out longer. Only did it for 10 secs last time. Thanks Kali.
Thanks for the help everyone. Back to normal. Also, thanks to the mods for moving to the q&a section.
Sent from my SPH-D710 using xda premium
I don't have a problem with the charging of my Desire, that isn't my question, my question is one that I can't seem to find the answer to anywhere, though I've found some threads that imply the answer.
Does the Desire stop charging when the green light is on, and run on AC power? I know a lot of modern devices do this, but I can't seem to find the answer to this question anywhere.
I have found that apparently people who charge up to 100% find that the charge drops to 93% after disconnecting the adaptor. I don't have a problem with that if it happens to my desire, though I haven't tested it, but I wish to know the answer to my above question if anyone knows, so that I know whether I can just leave it in the charger without any problems, basically.
The phone will go green at 90%, and will charge up to 100% then stop charging. I believe it will drain down to as low as 90% despite saying 100% charge before it kicks back in and charges again, and will rinse and repeat.
As far as I can remember it's the kernel that does it, I remember using Oxygen and I think Thalamus' kernel that upped the charge draining point to 95%.
This is why when you take your phone off of charge it can drop a huge amount in very little time.
Thanks, not exactly what I hoped the phone would do (running off AC power and not using battery at all when battery is full), but it's better than the phone just continually charging at 100%.
I have a odd problem. I have the Leedroid custom rom with its kernel installed, and it seems as when i plug in the charger that the battery DRAINS extra fast instead of CHARGE. I have no idea whats going on. The red LED light is on as usual but when i turn my phone off for a while and let it charge and then turn it on i only had like 5% battery left when i started charging at 20%. What do i do? Is this some kind of bug?
I dont believe that i cannot charge my phone, but im afraid that if i leave the charger in my phone will become completely drained of battery and that i then wont have any option left.
Please help me, my phone only have 5% battery left, and if there is something i can do before the battery drains completely, tell me as fast as you can!
Thanks!
/Joel
Never mind, i got it to work. It seems as if the battery didnt get enough electricity. Probably because i got the charger hooked up to a powerstrip whom also have a halogene spotlight connected to. That was on. The phone died and when i tried to charge it the red light flashed. So i turned off my spotligt and tried bashing the powerbutton.
The LED started to statically glow red and the phone turned on. I almost panicked because i rooted the phone yesterday and have only had the phone for like 1 and a half week.:angel:
jamenjoel said:
I have a odd problem. I have the Leedroid custom rom with its kernel installed, and it seems as when i plug in the charger that the battery DRAINS extra fast instead of CHARGE. I have no idea whats going on. The red LED light is on as usual but when i turn my phone off for a while and let it charge and then turn it on i only had like 5% battery left when i started charging at 20%. What do i do? Is this some kind of bug?
I dont believe that i cannot charge my phone, but im afraid that if i leave the charger in my phone will become completely drained of battery and that i then wont have any option left.
Please help me, my phone only have 5% battery left, and if there is something i can do before the battery drains completely, tell me as fast as you can!
Thanks!
/Joel
Click to expand...
Click to collapse
why dont power off the phone and charge it. maybe there are apps that cause it
acid28 said:
why dont you check which apps consume the battery.
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In this case it wouldnt have mattered since i charged the phone while it was turned off, but as i just wrote, i found out what the problem was. Haha :laugh:
So, a moderator can close the thread if he/she would like to. I will change the topic to *SOLVED*