Li-ion battery doesn't charge

[Paulo Lopes <pmml@netvita.pt>]

Hi,

I've a Li-ion battery on my laptop that says that it's capacity is of 
3600mAH, but i've compiled my kernel with acpi and i've been reading the 
proc fs under /proc/acpi/battery/0/info and it says that my battery last 
charge was only of 596mAH. This is bad since i can only use my laptop 
during 30 minutes...

I'm using the debian kernel-source 2.4.18 from stable and with acpi + 
acpid i can only shutdown my laptop, i can't even suspend it. I've tryed 
the acpi patches from acpi.sf.net (the latest for 2.4.18) and with that 
my kde doesn't recognize the acpi subsystem. (it recognizes with the 
default acpi subsystem, without patches)

Does anyone know how to charge the battery to the maximum? thanks.