For most applications of the 2500W INVERTER, we recommend that
you use one or more deep-cycle batteries that are separated from
the starting battery in your vehicle by a battery isolator. A battery
isolator is a solid-state electronic circuit which allows equipment
to be operated from an auxiliary battery without danger of discharging
the vehicle's starting battery. During vehicle operation, the battery
isolator automatically directs the charge from the alternator to
the battery requiring the charge.
Figure 5. Recommended Battery Configuration for medium-duty Applications
Battery isolators can be obtained at marine and RV dealers and
most auto parts stores.
If your application involves relatively low power loads (i.e. power
consumption of 300 watts or less) and relatively short operating
times before recharging (one hour or less ), you may connect 2500W
INVERTER directly to the vehicle starting battery.
Figure 6. 2500w INVERTER Connected directly to engine battery
for light duty applications