Xantrex Technology Powerpack 300 - Manual (Page 15)

Comprehensive Protection
2
Low Battery Protection
Low battery protection protects the internal battery from
excessive discharge and possible damage. When the AC
Power
ON
/
OFF
switch is turned
ON
, an audible alarm alerts
you when the internal battery is nearly discharged
(11.0 V DC) and the unit turns off at 10.5 V DC.