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1. When calculating the amp/hour of the battery, find its “reserve minutes" rating. This is
typically is marked on the battery label along with the "Cold Cranking Amps" (CCA) rating.
If you multiply the reserve minutes rating of the battery by 0.3 it will tell you the battery
amp/hour.
2. To estimate the maximum battery power the inverter will require to run a piece of
equipment or appliance, divide its continuous load wattage equipment by 10.
3. Conclusion: The reserve power of a battery with a 150 reserve minutes rating is sufficient
to satisfy the continuous load demand placed on the inverter for a maximum of about one
hour. (45 amps/hour-amp draw = 1 hour).
Note:
The type of battery you use to power your inverter is important. Batteries designed to start
engines have multiple layers of very thin plates. These provide extensive surface area that will
produce a powerful short burst of electrical power required to start combustion engines. Using
an inverter will cause a battery to discharge and recharge often. We recommend that you use
a different type of battery that is designed specifically for this type of load requirement.
Deep cycle (marine) batteries generally have the highest reserve ratings. They are designed
with thicker plates making them capable of withstanding repeated complete drains of power
and recharging. If you do not have a deep cycle battery we recommend that you run the engine
of your vehicle when operating the inverter.
Connection Cable Gauges.
When connecting the inverter to the power source use the thickest wire available, in the
shortest length practical.
If the inverter and the battery are positioned within four feet of each other, a minimum of # 4
gauge wire should be used to make the connections. When the distance between them is four
to six feel, a minimum of #2 gauge wire is required. When separated by more than six feet,
always use # 0 gauge wire. See last page of this manual for wire size recommendations.
Connecting Your inverter.
1. Make sure the ON/OFF switch located on the front panel of the inverter is in the OFF(0)
position.
2. Connect the cables to the power input terminals at the rear of the inverter. Make sure to
match the negative (Black) terminal on the 12 volt power source. Then repeat this
procedure with the positive (Red) terminal connecting a wire to the positive terminal of the
12V volt power source. Make sure you have a good secure connection, but do not over
tighten these screws.
Note:
z Loose connections can result in a severe decrease in voltage which may cause damage
to the wires and insulation.
z Failure to make a proper connection between the inverter and the power source will result
in reverse polarity. Reverse polarity will blow the internal fuses in the inverter and may
cause permanent damage to the inverter. Damage caused by reverse polarity is not
covered under the warranty.
z Making the connection between the Positive terminals may cause a spark as a result of
current flowing to charge capacitors within the inverter. This is a normal occurrence. Due
