7
Mount the PROwatt on a flat surface using the mounting bracket on the bottom. Mounting hardware should be
corrosion resistant and #10 or larger. The PROwatt may be mounted horizontally or vertically.
4.2 Battery
The battery you use strongly affects the performance you can expect from your PROwatt 1500. It is important to
connect the PROwatt 1500 to the correct size and type of battery. The following information will help you select
the appropriate batteries for your application.
Battery Type
The lead-acid battery which is probably most familiar
is the starting battery in your automobile. An auto-
motive starting battery is designed to deliver a large
amount of current for a short period of time (so it can
start your engine). Only a small portion of the bat-
tery's capacity is used when starting the engine and it
is quickly recharged by the running engine. It is not
designed for repeated charge-discharge cycles where
the battery is almost completely discharged and then
recharged. If it is used in this kind of deep discharge
service, it will wear out very rapidly.
Deep-cycle lead-acid batteries are designed for deep
discharge service where they will be repeatedly discharged and recharged. They are marketed for use in recrea-
tional vehicles, boats, and electric golf carts so you may see them referred to as RV batteries, marine batteries, or
golf cart batteries.
For most applications of the PROwatt 1500, Statpower recommends that you use one or more deep-cycle batter-
ies that are separated from the starting battery in your vehicle by a battery isolator. A battery isolator is a solid-
state electronic circuit that allows equipment to be operated from an auxiliary battery without danger of dis-
charging the vehicle's starting battery. During vehicle operation, the battery isolator automatically directs the
charge from the alternator to the battery requiring the charge. 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. average power
consumption of 300 watts or less) and
relatively short operating times before
recharging (one hour or less), you may
connect the PROwatt 1500 directly to
the vehicle starting battery.
CAUTION! The PROwatt 1500/12 must
be connected only to batteries with a
nominal output voltage of 12 volts . The
PROwatt 1500/12 will not operate from a
6 volt battery, and will be damaged if it is
connected to a 24 volt battery. The
PW1500/24 must be connected only to a
24 volt battery system. The PW1500/24
will not operate from a 6 or 12 volt bat-
tery.
Figure 4. PROwatt 1500 Connected Directly to Engine Battery
for Light-Duty Applications
Figure 5. Recommended Battery Configuration
for Medium-Duty Applications
