Whistler WATT PRO-800W - Manual (Page 9)

The Power Source.
When the engine is off, most batteries will provide ample
power to the inverter for one to two hours. The actual
length of time is a function of several variables including
the age and condition of the battery and the power
demand being placed on it by the equipment being
operated with the inverter.
If you are using the inverter while the engine is off, we
recommend you start the engine every hour and let it run
for at least 10 minutes to recharge the battery. We also
recommend that the device plugged into the inverter be
turned off before turning over the engine.
Although it is not necessary to disconnect the inverter
when turning over the engine, the inverter may
momentarily cease operation as the battery voltage
decreases. When the inverter is not supplying power, and
is turned on, it draws very low (<0.80 A).
OPERATION
Important Information on Battery Chargers
Using your inverter with battery chargers for power tools,
flashlights, video cameras and laptop computers may
cause damage to the inverter or the charging unit. Check
with the appliance manufacturer for compatibility with
modified sine wave inverters if you’re unsure.
Although we advise against it, if you attempt to use a
charging unit, monitor the temperature of the charging
unit for approximately 10 minutes. If the charging unit
becomes unusually warm, disconnect it from the inverter
immediately.
Don’t Blow A Fuse.
This inverter is equipped with internal spade type fuses.
With reasonable care, it should not be necessary to
replace the fuse(s) in your inverter.
Most blown fuses are the result of reverse polarity or a
short circuit within the appliance or equipment being
operated. If the fuse(s) does blow, turn off and disconnect
the appliance or equipment from the inverter immediately,
repair the related problem and replace the fuse(s). The
internal fuses are replaceable, however only electronic
knowledgeable people should attempt fuse replacement.
Note:
• Make certain to correct the source of the overload
which caused the blown fuse before turning your
inverter back ON (l).
15
OPERATION
14
pro800w.qxp 4/30/2010 9:00 AM Page 17