Hi folks,
My grizzled old T500 has developed either a battery or charging problem. The charging state seems to be stuck at 22% with the charger plugged in and the battery icon at the bottom of the screen remains amber and flashing. With the laptop off and plugged into the charger, only the power plug icon is illuminated. (Normally both battery and plug icon illuminate with the laptop off.)
If I remove the power connection with the system on, it goes 'power off' instantly indicating that there really is not 22% capacity available.
I think this is a distinct issue fro the loose power connector where I need to frequently wiggle the power connection at the back ot the laptop to retain AC power.
I'm running Linux and see the following information in the ACPI section of /proc:
I see no obvious indication of the problem but perhaps someone more knowledgeable than me ...Code:hbarta@cypress:/proc/acpi/battery/BAT0$ cat alarm alarm: 1541 mWh hbarta@cypress:/proc/acpi/battery/BAT0$ cat info present: yes design capacity: 56160 mWh last full capacity: 30820 mWh battery technology: rechargeable design voltage: 10800 mV design capacity warning: 1541 mWh design capacity low: 200 mWh cycle count: 0 capacity granularity 1: 1 mWh capacity granularity 2: 1 mWh model number: 42T4622 serial number: 8619 battery type: LION OEM info: Panasonic hbarta@cypress:/proc/acpi/battery/BAT0$ cat state present: yes capacity state: ok charging state: charged present rate: 0 mW remaining capacity: 6630 mWh present voltage: 11347 mV hbarta@cypress:/proc/acpi/battery/BAT0$
How can I determine if this is a battery or laptop problem? (Anyone in the Chicago area have a battery we could temporarily swap to test?)
I have a drive with Win Vista I could put in if it would produce any better diagnostics.
Many thanks for your help!
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your best bet is try a new battery, seems like some cells are either completely dead or charging circuit have gone south.
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I'd say that it's most likely a bad battery.
You're not going to get very far without testing the machine with a *known good* one.
Good luck. -
Thanks for the suggestions. Guess I'll start looking for a battery
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A replacement battery solved the problem.
Thanks. -
T500 battery charging woes
Discussion in 'Lenovo' started by HankB, Oct 7, 2013.