Acer 6920g battery life issue

haha well...
it seems my acer 6920g is giving me quite a few problems lately..
anyways... i bought my 6920g for about a year and a half now...
and i think my battery life has just exponentially decreased from 2hrs to at most 30 minutes long.
Whats suprising is that i was looking at the battery status and it was at 82% (1h 22 min remaining) and then, it just went into standby mode. When i plug the power in its at 5% power...

This just occured before i posted this thread, and ive been seeing this happening for about.. 2 weeks now.
Any idea on whats wrong? or is it just my battery died.... and gotta get a new one...

Thanks

PS battery is the original one that came with the laptop.

 

Your battery is probably given its life...
May be you could try some recalibrating...
That my might help...

Google for some guides how to recalibrate battery...

 

Or you can buy some online. I think I bought mine for around 40$ on ebay

 

mmm....
maybe its dead but
i was thinking of voltage problems...
or is it just windows having an incorrect battery life indicator
coz it just closes at 60-70% left..
theres no low battery warning or dimming of screen as i turned those on at 30%

 

Start HWmonitor and check how much is your battery charged...
There you can see Designed capacity, last charge capacity and current capacity...And then you`ll see if it`s dead or not...