battery drain problem on my SPVC600

[pirondello]

I have 2 SPVC600 phones and one is not even 24 hours in standby before the battery goes empty, whereas the other phone is in standby several days. I tried several different "virgin" ROMs on both phones, several different batteries, still the same problem, one phone just sucks the energy out of the battery like crazy.

Anybody knows where the problem is and how it could be fixed?

Thanks
Pirondello

[juanlopera]

Hi, i know that this is a old thread, but... the same issue here, i have a T-mobile SDA, replace the original battery that come with the phone 2 years ago, this battery die and ebay a fresh battery again, but... nothing, goes empty in less than 13 hours with the fresh and new battery (with the old one at least 4 hours before die under nitrogen´s wm6 rom), any suggestion? (i clean the phone of programs, change roms, downgrade to original WM5 but... nothing, only 12 to 14 hours and empty :confused:), the new battery is a "OEM ST26" from sanyo...

Until this day, my tornado was the more reliable and trust phone that i´ve had

Can you recommend me any procedure for test the phone... do you think that is a usb connection Issue, i read in a lot of threads that this could be Rom upgrade... ´coz the new drivers, componets, etc.... any help ir really appreciated

Greetings from Colombia...

[tobbbie]

Usually the original batteries are the best you can get. Even the (now very old) original ones (Sanyo ST26-C) still have their original capacity and I have not seen a single battery of these that has failed until now.
If you see such a drain from the device you could possibly disassemble the device and clean it. If that does not help - sad :-(

Does it make difference if you charge the battery on the device being off or while OS is running?
If you have volt-meter: what is th battery-voltage when empty/fully loaded?

[juanlopera]

Hi Tobbie, thanks for the reply, yeah, i follow all procedures for battery maintance, i try charge with the phone off, phone on (with radio turned on and off, really i only see a difference of only 1 1/2 hours...), this night i try clean with isopropilic alcohol the contacs between battery an phone and i see... i noted something peculiar:sometimes when i plug the AC Adapter or connecting to my desktop, the led indicator (in this case orange), dont turn on, sometime this led appars and dissapear passing 20 seconds but full charge the phone (i see this in seetings=> energy configuration => 100%)... other times this light is hold until this change to green (fully charged), but ever the same result, lees than 12 Hours... this happen with both batteries (old one and fresh buyed from a reliable seller 15 days ago...)

I download awhile the service manual for tornado but... Scare... i really love this phone, really i have now a LG Incite, but this phone is my "backup", coz all time buy and sell phones, but this since 2005 "sleep with me...", if after clean contacts i dont see any change or fix... No mercy with tornado´s LOL...

and i want with all neighborhoods a voltimeter, can you tell me about the standar values for this battery (my knowlodgement about electronics are limited a lot), i post my results here after my test...)

Thanks a lot, i hope that you can help me later (and sorry for my ugly english)

Greetings from Colombia

[tobbbie]

This sounds weird, but the only reasonable source of evil is that also your other battery (equally aged, but unused probably) is chemically dead. It hardly ever happens that the charge-electronics is going mad somehow. With the many Tornado that I had on my desk, not a single one had problems with this part. For some devices I have seen that the batteries were stone dead - and these behave as you describe it.
It looks as if the battery has lost its capacity. A fully charged battery has a capacity of roughly 1100 mAh. With a drain of ~75mA (for the fully lit display) this will last 14h and 40 minutes. So a similar power drain would have to suck the juice off the battery - which I doubt that anything will do. If you switched off all radio parts (GSM, WLAN + BT) there is nothing left that drains the battery like this.
You could try to check how long the batteries will last when you have the display light draining the battery additionally. For this part it is well known how much it drains (see above) - and if you see that the battery lasts half the time of what you said before - then the battery is ok and the device has some mysterious power drain. If however the battery only lasts a few minutes with this defined load - then it is surely dead.
Check the battery capacity link in my signature to get the tooling for measuring this easily.

Voltages should be measured with a digital Voltmeter if you have access to one. They are for dead batteries not much different to good ones if you do not apply load, but a fully charged LiIon has around 4,2 V and discharged in a Tornado around 3,55 V.
The Tornado will shut off at around 3,55 V but if the Voltage is much higher when removing the battery and measuring the Voltage - another hint for a dead battery.

Good luck :-)