April 2, 2008

### NAME

battery - support for batteries and related functionality in Apple Powerbook 2400, 3400 and 3500 (also known as Original PowerBook G3)

### SYNOPSIS

battery* at pmu?

### DESCRIPTION

The battery driver provides support for batteries and hardware sensors found in 1st generation PCI-based PowerBooks, currently it only exports a few sensors via the envsys(4) interface, including battery charge, voltage, CPU and battery temperature and AC power availability.

### SEE ALSO

envsys(4), pmu(4), envstat(8)

### BUGS

There is no APM emulation right now and the battery current sensor may return misleading or wrong data. This driver is considered preliminary and may be replaced at some point.