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Sine Wave Basics

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  1. What an Inverter Does in a Battery System

    The inverter turns stored battery power into the kind of electricity your outlets use. Here's what it does and what to look at on one.

  2. DC and AC Power: Why Batteries Need an Inverter

    Batteries store DC, but household outlets and appliances use AC. Here's the difference and why a battery can't power them directly.

  3. Pure Sine Wave vs Modified Sine Wave Inverters

    Pure and modified sine wave inverters shape their AC output differently. Here's how, and what to check before you choose either.

  4. Which Devices Care About Waveform

    Some equipment runs fine on a modified sine wave and some doesn't. Here's how to judge what's likely to cope and how to check.

  5. Reading the Label on an Inverter

    What the volts, hertz, watts and VA figures on an inverter label mean, and which ones to compare against your own equipment.

  6. Watts, VA and Power Factor Explained

    Why inverter ratings come in both watts and VA, how power factor links them, and what to compare when sizing an inverter.