Build a Solar Power Generator for Under $300

5. Invest in an Inverter.

If you want to run AC appliances, you will have to invest in an inverter. This will convert the stored DC power in the battery into AC power for most of your household appliances. I bought a 115 volt 140 watt inverter made by Power-to-Go at Pep Boys for $50. Count up the number of watts you'll be using (e.g., a small color television(=60 watts) with a VCR(=22 watts), you'll need 82 watts). A variety of cheap inverters from 100 watts to 3000 watts can be had from Lane's Professional Car Products. Type "inverters" into his search bar.

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