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Inverter Guide and Sizing

Energy stored in your batteries is accessible in two ways. Direct access is available for appliances designed to operate on 12v DC current. However, many appliances require 110v AC power (like those in your house).

To convert the current in your batteries from DC to AC you’ll need an inverter. This device makes it possible to run your AC devices. These are rated in watt output.

A 1500 watt inverter can operate most small appliances requiring about 10amps AC current such a TV, coffee maker, laptop, computer, radio, lights, etc. To get more current you’ll need a higher wattage inverter.

Note that the type of inverter must be paired with a properly sized battery bank so as not to discharge the batteries too quickly. Also, the size of solar array is not affected by your inverter size. The solar array size should be chosen based on the amount of energy you’ll consume in a given day. An inverter needs to be sized on the max draw on your batteries at a given time such as how many things you’ll be
powering at once.

Your inverter will need be able to meet maximum draw at a given time. This mean adding up all of the current being drawn at once from all of the appliances which are powered on simultaneously. If you’ll be vacuuming with the lights on and your laptop charging you’ll need to know the entire current draw of these appliances to size your inverter. If your inverter is too small it will have to run less appliances at one time.
Why Choose a Pure Sine Wave Inverter?
The ultimate choice for powering almost any electronic
equipment, pure sine wave inverters provide an exact replica of AC power. Two GFCI-equipped outlets provide a safe and convenient connection for reliable access to pure interference-free power. Pure sine wave inverters are ideal for running any load within their wattage range.
Why Choose a Modified Sine Wave Inverter?
For running typical resistive loads like lights and appliances, a modified sine wave inverter is a reliable, cost-effective choice.
Though modified sine wave inverters do not produce a perfect replica of AC true sine wave power, they do provide an affordable option that for many mobile power applications, is perfectly adequate.

Some devices, however, may not recognize the modified sine wave and may run poorly or not at all. The solution to these issues is to purchase a pure sine wave inverter. For most applications though, a modified sine wave inverter is a reliable and cost-effective mobile-power solution.

Wattage Used by Mobile Appliances and Tools

Operating wattage may not be exact for all applications. Please
review individual product specification for actual wattage requirements.
Wattage rating can be
calculated by: Volts (120) x Amps.

Appliances and Electronics
(Items with symbol ideal for pure sine inverter)