Dual Battery support for Linux on Dell Inspiron
This lets you get individual battery life rather than just treat
both batteries as one big battery. The patch should not 'break' any other
apps (as far as I know).
Here is a patch to the kernel apm.c code to get the dual battery
status into /proc/apm.
The battery info is added to the end of the existing apm data. Typical
output looks like
1.16a 1.2 0x03 0x01 0x03 0x09 85% 507 min
1 0x03 0x09 91% 315 min
2 0x03 0x09 77% 192 min
The 2nd line indicates the number of batteries followed by one line
of status for each battery. 1st column is the battery bay index.
The patch applies to 2.4.18 kernel. Apply with
patch -p0 < dualbat_2.4.18.patch
Dual battery tools
I have also modified xapm from apmd-3.0.2 to provide dual battery display.
If you want that here is the
If you click on the battery bars, you get that individual battery
life, click back on text to get total back. Clicking also toggles
between time and percentage charge.
Last modified: 12 April 2003
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