I just bought a new 8800 mAh battery for my VAIO PCG-7N2L laptop, but it's not recognized by ubuntu and won't boot while the battery is actually attached. I had to replace it because the 4800mAh battery crapped out on me.

acpi 1 returns

Code:
Battery 1: discharging, 100%, rate information unavailable.
cat /proc/ACPI/battery/BAT0/info returns

Code:
present:                 yes
design capacity:         655350 mWh
last full capacity:      655350 mWh
battery technology:      non-rechargeable
design voltage:          655350 mV
design capacity warning: 1000 mWh
design capacity low:     400 mWh
capacity granularity 1:  100 mWh
capacity granularity 2:  100 mWh
model number:
serial number:
battery type:            LiOn
OEM info:                Sony Corp.
cat /proc/acpi/battery/BAT0/state returns

Code:
present:                 yes
capacity state:          ok
charging state:          discharging
present rate:            unknown
remaining capacity:      655350 mWh
present voltage:         unknown
uname -a returns

Code:
Linux laptop 2.6.24-24-generic #1 SMP Fri Sep 18 16:49:39 UTC 2009 i686 
GNU/Linux