How to Use Your 700 Watt Power Inverter With a Deep Cycle Battery


A power inverter is an electronic device that converts DC electrical power into AC electrical power. Power inverters are often used in conjunction with lead-acid batteries to provide off-grid electrical power, for example in camping trailers and portable buildings. Because deep-cycle batteries are designed to provide a set amount of electrical power over an extended period of time, lead-acid batteries are commonly used when a power inverter must provide AC electrical power for more than one hour at a time.

The wattage rating of a power inverter -- in this case, a 700-watt power inverter -- is a measure of the amount of power the inverter can supply continuously. One watt is equal to one volt multiplied by one amp, a measure of electrical current. If a power inverter supplies household electrical voltage -- 120 volts in North America -- then a 700-watt power inverter will provide a maximum of 5.8 amps at that voltage.

Things You'll Need

  • Power inverter (700-watt rating)
  • 12-volt deep-cycle lead-acid battery
  • Electrical appliance (such as a lamp or television)
  • Connect the red (positive) power inverter input lead to the positive battery terminal. Power inverters with capacities over 500 watts often use jumper cable-type input leads.

  • Connect the negative (black) power inverter input lead to the negative battery terminal.

  • Turn on the power inverter and allow the power inverter circuitry to charge up for approximately 30 seconds. Plug the electrical appliance into the power inverter electrical outlet. The power outlets on a power inverter are standard electrical outlets.

  • Turn on and use the appliance as if it is plugged into a household electrical plug.

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