Xantrex Technology 400R - Manual (Page 16)

Introduction
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Overheating
The XPower Powerpack is protected from overheating. If the
inverter exceeds a safe temperature, power to the AC Outlet
automatically shuts off.
Low Battery Protection
Low battery protection protects the internal battery from
excessive discharge and possible damage. When the AC
Outlet
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.
Jump-Start Cables Safety Feature
The XPower Powerpack comes with a user-replaceable
250 A fuse to protect the unit and vehicle battery from
damage through reverse polarity and short-circuit conditions.