Xantrex PROwatt 150 Owner's Manual page 16

Battery run time is less than expected.
The inverter runs for a while, then the fault light comes on.
Symptom
The inverter is cool or warm to touch.
Possible Cause
The AC product power consump-
tion is higher than rated.
Battery is old or defective.
Battery is not being properly
charged.
16
Suggested Remedy
Use a larger battery to make up for
increased power requirement.
Replace battery.
Have vehicle electrical system checked
by a qualified technician.