When the power is on the TP2 the red LED charge light is on. the icon in the task bar changes to show that it is plugged in. but after sitting for hours the battery only drains further. If i power the TP2 down plug it up the red LED comes on and the battery charges fully to 100% then goes to green. I have bought new battery and charger. any ideas? note it is allowed to charge via usb in the settings. thanks folks
This is NOT a issue. It's a feature.
Phone does charge to 100%, but later the electricity is cut off until it reaches ~95% (or something like that). It prevents the battery from overcharging and saves important battery lifetime cycles. If it would be charged constantly from 99% to 100% the battery would be dead in a month.
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.
Click to expand...
Click to collapse
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
I have noticed that whenever I charge my DHD through my laptop USB port, It discharges faster than on a full charge through the charger.
Am I imagining things?
I don't know about fast discharging, but mine takes forever to charge while connected through a USB :/ however, there are ROMS that have included fast USB charging either through the ROM itself or a kernel
Hit the thanks button if I helped you or if you likey my post trolol
Also just because the indicator light is green and battery reads 100% it doesn't mean the battery is at 100%. There is an amount of time that varies depending whether you charge via mains or USB after the light goes green/100% that the battery is actually fully charged.
I remember reading somewhere that in the case of USB charging it can actually take up to an hour after to the light turning green that the battery is at 100%. Something to bear in mind.
After the light has turned green and the battery shows 100%, power off the phone and charge for an additional hour or two. This should help.
Also use battery monitor app to watch the charging current--the battery is fully charged only when the monitor shows 0mA. Usually after the light has turned green and the battery showed 100%, the battery charging current is still 40-50mA.
So I've noticed for a while now that when I disconnect my dInc after charging, the battery will drain almost 20% within the first couple hours (almost no use at all). I suspect that the battery isn't being fully charged when the green light first goes off. After I plug/unplug the cable and charge a couple more times, it holds a higher charge more consistently. I've read this is due to the phone not wanting to over-charge the battery, however in the case of my battery (Seido 1750), it doesn't even fully charge.
Is there any way (aside from the plug/unplug scenario) to fully charge the battery in one go? An app maybe?
My phone is rooted.
Thanks.
The battery could be losing its ability to hit its capacity. In other words its wearing down.
Nothing will fix it. There are no apps to bump charge.
Sent from my Galaxy Nexus using Tapatalk 2
Get an external charger for your battery and couple of extra batteries. I get best result not charging in the phone and rotating batteries.
Sent from a HTC Droid Incredible running CM 10.1
Charge the phone powered on until the light turns green. Leave it plugged in but turn it off. Leave it plugged in, off for about 20 minutes, you will notice the light is still orange even though its already "charged." Once the light goes green again, unplug it and power it up. When I do this, my battery will go for 3 or 4 hours before it hits 90 percent with my regular use.
el6006 said:
Charge the phone powered on until the light turns green. Leave it plugged in but turn it off. Leave it plugged in, off for about 20 minutes, you will notice the light is still orange even though its already "charged." Once the light goes green again, unplug it and power it up. When I do this, my battery will go for 3 or 4 hours before it hits 90 percent with my regular use.
Click to expand...
Click to collapse
Just be aware that bump charging as it's called, can reduce the life of your battery over time.
I always turn off the phone before charging, but this phone does not have a number percent on the display when charging, so I wait until the indicator light is green, but every time I turn on the phone, it is actually around 97%, not 100%
This messed up my attempts to calibrate the battery, so can someone explain how to tell when it charged to 100% when there is no percent number on the screen when charging...
Charge it while it's on till it's 100%
i have read that charging while on is not good for the battery, but all I want to know is does the green notification light mean it is 100%? so is something wrong with my phone that it is only at 97%?
With modern batteries, it won't make that much of an impact on the battery if you charge it while it is on or not. Because the phone is off, it will charge faster however.
Heya, so i know there are threads about charging and other battery problems, but mine seems to be different.
My tablet was used in car almost always on charger, and after almost 2 years such usage battery was low capacity, and one day i noticed it wont charge at all, after turning on tablet battery 0% and shuting down. Indicator shows charge icon, but wont charge.
So i purchased new battery, installed it, battery was @ 56%, so i ran battery benchmark and played some games, wow those 56% lasted 2x longer than old 100% battery. So after it was below 10% i pluged in charger, indicator shows charging so i left it for some time, and after checking tablet i saw it wont charge ((
Same problem a with old battery... Anyone have ideas? May it be charging port?
Hi,
Did u charge it when on or off? And did u try other charger?
Yes used original,and lg chargers. It doesnt matter the tablet is on or off.
When turned off, and connect: screen go on showing battery, after that battery shows green at the bottom of battery and turns screen off after few sec. Pressing home button shows battery again. But as it dont charge it always shows green at the bottom of battery. When turned on simply battery shows 0 or 1% and turns off after a while.
Anyways, ordered new charging port as they are cheap. Will post outcome
Afraid that can be motherboard fried or somethink as before that happened tablet was ON with gaming bot running for like 24 hours.
Installed new charging port board, but wont help ((