Battery drops from 70% to 4%

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dwilsonfl · #1 Post by **dwilsonfl** » Thu Oct 23, 2008 10:33 pm

After running on the 9 cell battery for a couple of hours with a steady decline as expected, all of a sudden the battery went from 70% to 4%.

What's up with that?

sarbin · #2 Post by **sarbin** » Thu Oct 23, 2008 10:44 pm

how many cycles on it? maybe it's getting near its end-of-life?

dwilsonfl · #3 Post by **dwilsonfl** » Thu Oct 23, 2008 11:02 pm

Got 78 cycles on it.

sarbin · #4 Post by **sarbin** » Thu Oct 23, 2008 11:24 pm

doesn't seem like too many.
what does power manager or battery maximizer list for the design capacity and full charge capacity?

dwilsonfl · #5 Post by **dwilsonfl** » Thu Oct 23, 2008 11:33 pm

Think Pad Configuration
design capacity 71.28 wh
design voltage 10.80V
full charge 153.74 Wh

Notebook Hardware control
12275 mv - Voltage
35540 mvH - capacity
153740 mvH - full capacity
0% wear level

anywhere else to check?

sarbin · #6 Post by **sarbin** » Thu Oct 23, 2008 11:40 pm

i'm stymied. i've never seen a battery that has a full charge capacity 2x its design capacity. a little more, but never 2x.

if you're running the thinkvantage power manager applet, you could try to do a battery gauge reset.

anthony · #7 Post by **anthony** » Fri Oct 31, 2008 9:46 pm

Is 273 cycles good? I've been wondering. This is the battery it came with in 2005. Do you think I have much time left?

Battery drops from 70% to 4%

Battery drops from 70% to 4%

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