Develop Bugs

Battery charging BUG

Hi every one,
As far i know, there is a BUG on every official ROM for European GSM Touch Pro2.
When your battery get full charged and keeping it plugged to the wallcharger, then your Pro2 start taking the power from your battery and NOT from the charger.
This can be checked by yourself and you will see that even with it connected, the battery in running down charge, till you unplug it and plug it again after some minutes/seconds.

Yeah, I have noticed it as well. Anyone have a solution?

Not a bug. LiPoly's do not like being trickle charged, therefore the charger turns off.
I have not verified it on the TP2 but I suspect that if you let it sit long enough the battery level would drop to some level and the charger would charge it back to 100%.

This is a rather good new if it can manage battery loads cycles...

khaytsus said:
Not a bug. LiPoly's do not like being trickle charged, therefore the charger turns off.
I have not verified it on the TP2 but I suspect that if you let it sit long enough the battery level would drop to some level and the charger would charge it back to 100%.
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Click to collapse
It oughta turn the charger off and run the device from the mains, though, not from the battery. Is it doing that?

godefroi said:
It oughta turn the charger off and run the device from the mains, though, not from the battery. Is it doing that?
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No it is NOT doing that, so to me it is a BUG.

just thought i would add this
for some reason on saturday i charged my phone via usb/pc and it lasted less than 24 hrs
so on sunday i drained it and charged it vis the plug
its still going noe
72 hrs 23 mins in stanby 30 mins talk and 4 hrs 7 mins use since 17.43 on 18/10/09
is never been this good so i thought it may be the new rom

http://www.batteryuniversity.com/partone-21.htm
Lithium-ion
(Li-ion)
Do charge the battery often. The battery lasts longer with partial rather than full discharges.
Do not use if pack gets hot during charge. Check also charger.
Charge methods: Constant voltage to 4.20V/cell (typical). No trickle-charge when full. Li-ion may remain in the charger (no memory). Battery must remain cool. No fast-charge possible.
Rapid charge = 3h
also i have read some where on xda that once it reaches 100% it'll stop charging

godefroi said:
It oughta turn the charger off and run the device from the mains, though, not from the battery. Is it doing that?
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Click to collapse
You know of any other modern phone that runs off the mains without the battery? None of my last three phones would without the battery.

khaytsus said:
You know of any other modern phone that runs off the mains without the battery? None of my last three phones would without the battery.
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Click to collapse
My Kaiser will. It turns off when you pull the battery, but you can turn it right back on.

Every one is talking about battery and it's components but no one speaks about that with charger pluged in, it should supply power and by pass the battery once it is fully charged like others models do.

sounds like you all need to do warranty exchanges for that lol

Tallpap said:
sounds like you all need to do warranty exchanges for that lol
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No, what we need is that HTC do what we paid for.

User22 said:
Every one is talking about battery and it's components but no one speaks about that with charger pluged in, it should supply power and by pass the battery once it is fully charged like others models do.
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Click to collapse
http://forum.xda-developers.com/showthread.php?t=571606 some people here probably would help
xnifex said:
it's true, once the TP2 hits 100% it stops charging the battery & the usage time will kick in.
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Click to collapse
and on this thread http://forum.xda-developers.com/showthread.php?t=573037&page=4 which a guy says
mattdoyal said:
Just tried my TP2 without the battery and plugged, didn't power on. Why would they take away the ability to power on while plugged in but with the battery removed?? This was and would be a great troubleshooting step. Hey HTC, start building our phones with this option!!
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i hope this helps

Have in mind that once the battery is fully charged, it never go to charge again till you unplug the cable of your wall/car charger... so what will hapen then???

hello anyone know about the issue with the battery ok when i charge my euro tp2 all night and when i go to start>settings>all settings>system>power i then click on the infomation tab and under last full charge i get "not applicable" and get 0 hours and 0minute for the rest
im running the offical htc 6.5 rom

To me this sounds CRAZY. So people are saying that when the device is fully charged it starts to use its battery, thats just crazy... So basically charging it overnight leaves you with "almost" full battery in the morning...
I havent noticed anything out of the ordinary, and every morning when I come and take my device from the charger the charging light is green (opposed to the orange when started charging) and the battery shows to be 100% full.
I will check this again in the morning as I havent really paid 10000% attention to it, but I think I would have noticed the weird behaviour…

noticed this since day 1. my dash didnt do this. i did notice that a soft reset will resume the charge.

This is normal behavior for battery powered devices.
When it's plugged in, the charge circuit charges the battery.
The device itself always runs off the battery when it's available, this is why some devices won't power on without the battery installed, and many devices won't power on with a failed battery installed.
Laptops do the same thing, though they can switch to AC only without losing their state.
It's a holdover I think from when electronics couldn't switch between power sources fast enough to not lose anything (I remember the original game boy would reset no matter what if you tried to switch between batt and AC). It's possible that cell phones can't make this transition since there isn't really extra space to stuff in the bits that allow this (some large-ish caps).
I've also heard that this reduces wear on the electronics, because the voltage is more reliable, but I've never seen that documented.

kay7 said:
The device itself always runs off the battery when it's available, this is why some devices won't power on without the battery installed, and many devices won't power on with a failed battery installed.
Laptops do the same thing, though they can switch to AC only without losing their state.
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I don't think this is true for (modern) laptops. All the macbooks and thinkpads that I've owned had a feature that if you plug it in while the battery is above X% (usually around 96) it will not charge. It even gives a message saying "Not Charging" in the battery status. The battery percentage then stays constant no matter how long I use the laptop, so it is not DIScharging either. Therefore it must be running from AC. If it can do that, I doubt they would have it run off the battery as soon as it is charged to 100% on a full charge cycle. I think any time AC is plugged in, a modern laptop will run from AC rather than battery, regardless of whether it is currently charging the battery. However, that's just my theory from personal observations.

[Q] Instant discharge.

So, I'm on my Evo today, playing a game (Air Strike). My battery is at 93% when I picked the phone up to play, and the phone is plugged in. Suddenly, with no warning what-so-ever, my phone shuts off. Of course a mini-freak out and many "wtf's" ensue. No warning, no signs, even the led went off. I pulled the battery, put it back, then plugged the phone in again. After that it gave me the blinking light indicating the battery was too low to turn on. After a few minutes charging she came back on and battery was at 5%.
How the hell does a battery go from 93% to 0% in less than 5 minutes, and give no warning at all?? Anybody else ever have this problem?

Wow I've have never heard or that happening before. Maybe a glitch in the battery stash? Did it take awhile to charge up to 100%? Can you reproduce the issue again?
Sent from my EVO (CM 6.1.1) using XDA App

I had this problem with my older phone once. The battery itself may have a problem or your phone is not getting charged properly.
Try These :
1) Try charging the phone overnite from the Wall charger (Not through USB of your computer)
2) If the above does not work, and you have access to another evo battery, then try using that.(try using a friends battery and charger for a day. ) (Ofcourse needless to say the charger and battery must be for Evoonly )
In my case, my phone started working fine again after getting my battery & charger replaced.

Probably shouldn't worry about it too much just yet. Could be something as simple as your battery meter was mis-calibrated. The meter itself is software so it can easily be wrong/off. If it continues you may have a bad battery.

Sounds to me like something is wrong. Did you just get the phone or have you had it?

Idk... The phone had been plugged in for most of the day (hadn't gone anywhere. Lazy day lol) And like I said, the led went completely out as well.
Haven't had the problem again, so we'll see I guess....

Mark_Hardware said:
Idk... The phone had been plugged in for most of the day (hadn't gone anywhere. Lazy day lol) And like I said, the led went completely out as well.
Haven't had the problem again, so we'll see I guess....
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I've seen some posts about the Evo battery shutting off the charge when its being used. Were you using your Evo while it was charging?
If the battery doesn't seem to be giving you percentages that are accurate, you might want to recalibrate your battery.
Common misconceptions sticky (Evo Q&A) said:
Battery recalibration (Thanks to Cyanogen for this and to fachadick for bringing it to my attention).
If you're experiencing higher than normal battery drain, try the following:
1. Charge the phone to full battery; let it keep charging until the battery says it is fully charged. Do not just wait until the light is green, it isn't always fully charged, causing a lot of inaccuracies. (You can check by going to: Settings -> About Phone -> Status -> Battery Level = Full.)
2. Boot to recovery and wipe battery stats.
(To have the most accurate of battery stats, reboot the phone immediately after wiping the battery stats and wait for your ROM to boot completely to the desktop. Once your entire boot is done and you have full access to the phone, go ahead and pull the charger and continue.)
3. Do not charge the phone until after draining the battery completely, resulting in it automatically shutting off. Take out the battery, and keep trying to turn on your phone until it will not turn back on at all.
4. Recharge the phone completely and then use as you normally would.
This is a method that has been proven to work, I am sure there are other ways. My battery lasts longer after doing this and the reading is much more accurate. It might be advisable to do this after every ROM install if you want the most battery life and most accurate battery reading by the phone's software.
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[Q] about my battery

ok so i got a problem with my battery
my battery on my phone just going out to fast
for example today
i connected it so it could reload and then
when i disconnected it was 100%
then after 2 hours only that i havnt use the phone i mean havnt touched it even once
i look again on battery life and here it says 36%
and it keep going every day
can some1 tell me why it keep happening???

WOW! That's a major drain in 2hours.
My 2 cents are on a defective battery - since the phone was on standby.
You can try some tutorials on adjusting the power saving settings (like screen brithgness what to turn off and not etc.)
Also you might try caibrate the battery.

there is a thing like u charge it to 100% ,unplug from the charger and turn the phone off ,then plug in again and charge to 100% again... there is a thread about it on this forum, do a lil search it might help u

Dial *#*#4636#*#* and go to battery and find partial wake usage, here the apps are listed that prevent the phone form sleeping and thus causing battery drain. Also check the % under Settings-about phone- battery usage to see what app or process consumed the most battery.

Does it get very hot? I mean - if the battery really contains 1500mAh (which I doubt in this case) and drains completely in 3 hours, that's 500mAh, so 3.5V*0,5A=1,75W continuesly.
You really should notice that while it's in your pocket...

no the phone isnt getting hot
i mean it can sit on my pocket for like 2-3 hours and then it suddenly 3x %
without even touching it

Try these steps:
1. Please connect the phone to the charger with the phone powered on, and allow the phone to charge until the notification LED is green, indicating the device is fully charged.
2. Disconnect the phone from the charger, and power it off.
3. Reconnect the phone to the charger with the phone powered off, and allow the phone to charge until the notification LED is green.
4. Disconnect the phone from the charger and power it on. Once the phone is powered completely on, power it off again and reconnect it to the charger until the notification LED is green.
5. Disconnect the phone, power it on (OPTIONAL: Enter Recovery at this point and Wipe Battery Stats (from Advanced menu), and use it. You need to use this sequence only once.
If that does not solve it you have a defective batterie.

ok i will try it
but can u tell me what the point???
i mean what does it do??

NoneSkillZ said:
ok i will try it
but can u tell me what the point???
i mean what does it do??
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Click to collapse
The point of that, is to make the battery life longer. And actually it works. I tried when i bought my phone an the increase was significant!
Edit: Just saw in another thread that some newer custom ROMs has some things messed up, and they eat the battery more than normal when the screen is off. You might take a look at it.

yea i did all the steps and its not working
the battery still going down rapidly
so i should buy new one??

Yeah.
BTW, are you on a stock rom?

srry
no idea what stock rom means
but im on miui rom

Battery drains fast when charger plugged in - Urgent help!

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*

Phone shuts down at 14%

So, I bought another battery. Will this sort it?
Also, what's the usual procedure?
Should I charge the battery to full in the phone (turned off) then boot, set up, then charge again and reset battery stats?

The problem is that the battery control chip doesn't take into account that the battery ages.
Resetting battery stats or charging while turned off will only clear the stats you see in the settings menu. This guide will make your battery drain to 0% again: http://forum.xda-developers.com/showthread.php?t=1534892
I don't know what a new battery will do though.

I gathered that, but as the phone is going to a new user (my stepson) we got him a new battery anyway
I just wondered what the correct procedure is. I know you need to do a first charge with a new battery, as with a new phone, however, this phone obviously has a working ROM already on it.
So, the phone is charging now, switched off. Should I turn it on, use a little, then use the battery calibration app to delete the stats and then drain to 0%?

Kryten2k35 said:
I know you need to do a first charge with a new battery, as with a new phone
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Well, that assumption is probably inherited from the NiHM batteries in the past, because it's not needed with Li-Ion batteries. In fact charging to 80% is better than charging to 100% and keeping it plugged in.
You can read more about it here and here.
Kryten2k35 said:
So, the phone is charging now, switched off. Should I turn it on, use a little, then use the battery calibration app to delete the stats and then drain to 0%?
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Just charge it and use it for a full cycle. If it shuts down at 15%, you can try the battery calibration from the thread I mentioned above. If it doesn't, you're battery capacity is the same as the one the battery chip has calculated, which is good.

So, why does the first charge take so long?
This thing is still charging and it's been on the charger for 3 hours, whereas usually it'd be charged fully by now.
Been like that for every Li-Ion battery I've ever had (including my S3, took around 6 hours to charge, usually takes 3).
EDIT:
Just to clarify, I don't intend on leaving it past the green light. As soon as it says it's full I'll be taking it off charge and not trying ot overcharge it. But I still have the orange charging light after 3-4 hours.

To be honest, I don't know. Maybe it's a safety to prevent overcharging. Coincidentally, I've got exactly the same issue now. I asked about it in the calibration thread. I suppose it's normal, but I'm not sure about that.

Kryten2k35 said:
So, why does the first charge take so long?
This thing is still charging and it's been on the charger for 3 hours, whereas usually it'd be charged fully by now.
Been like that for every Li-Ion battery I've ever had (including my S3, took around 6 hours to charge, usually takes 3).
EDIT:
Just to clarify, I don't intend on leaving it past the green light. As soon as it says it's full I'll be taking it off charge and not trying ot overcharge it. But I still have the orange charging light after 3-4 hours.
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Click to collapse
my battery took just over 6 hours to charge the other day from completly dead
Sent from my HTC Desire