[ltp] ultrabay battery

[Paul RIVIER]

Hi,

I own a T42 with standard battery (6 cells) + 1 ultrabay battery (3 cells).
When unplugged, the laptop uses the ultrabay battery, then when empty, 
uses the normal one.
This worked out of the box, and seems to be hardware-controled, as I am 
pretty sure it would work under ... grub for exemple :)
T42 / Kernel 2.6.10

paul

ps : I am still looking for a way to control battery charge / discharge 
policy.
This way I would define several rules depending on my location and what 
I plan to do - is the purpose of preserving batteries.
(for the moment, my standard battery is never used, as my 3 cells 
ultrabay battery is used at first and I do not go really far this times 
- and that is bad for both batteries)
Thanks


Pino Giaquinto wrote:

> Using 2 batteries (main and ultrabay) on my TP-600E (Windows) I must 
> save my work and turn off the thinkpad when the ultrabay battery is 
> discharged and I must remove it and restart the thinkpad to work using 
> main battery!
> I wish to know if using 2 batteries (main and ultrabay) I can use my 
> TP-T30 (Fedora Core 4) without interruption or if I must save my work, 
> turn off, remove the ultrabay battery when it is dicharged, then turn 
> on... as with my old TP-600E :-(
>