Battery charging BUG

[User22]

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.

 

[SindreHansen]

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

 

[khaytsus]

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%.

 

[fuful]

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

 

[godefroi]

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%.

It oughta turn the charger off and run the device from the mains, though, not from the battery. Is it doing that?

 

[User22]

It oughta turn the charger off and run the device from the mains, though, not from the battery. Is it doing that?

No it is NOT doing that, so to me it is a BUG.

 

[combat goofwing]

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

 

[lilchip85]

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

 

[khaytsus]

It oughta turn the charger off and run the device from the mains, though, not from the battery. Is it doing that?

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.

 

[godefroi]

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.

My Kaiser will. It turns off when you pull the battery, but you can turn it right back on.

 

[User22]

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.

 

[Tallpap]

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

 

[User22]

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

No, what we need is that HTC do what we paid for.

 

[lilchip85]

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.

http://forum.xda-developers.com/showthread.php?t=571606 some people here probably would help

it's true, once the TP2 hits 100% it stops charging the battery & the usage time will kick in.

and on this thread http://forum.xda-developers.com/showthread.php?t=573037&page=4 which a guy says

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!!

i hope this helps

 

[User22]

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???

 

[lnoormohamed]

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

 

[Loco5150]

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…

 

[jayr04]

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

 

[kay7]

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.

 

[enisoc]

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.

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.