The big one. 3000 watts continuous of true pure sine wave power from a 12V battery bank, with two GFCI duplex outlets on the front. This is the inverter for a build that runs real appliances — a microwave, a compressor fridge and a power tool at the same time, not a phone charger.

Pure sine matters here and it is worth being clear about why. A modified sine inverter puts out a stepped approximation of AC, which is fine for a kettle or a drill but makes some electronics buzz, run hot, or refuse to work: induction cooktops, CPAP machines, variable-speed tools, some battery chargers and most medical equipment. Pure sine is the same waveform as household power, so anything that works at home works here. If you are not sure what you will plug in, pure sine is the answer that does not come back to bite you.

At 3000W the wiring is the real job — this draws well over 250 amps at full load, so it needs short, heavy cable and a properly sized fuse at the battery. Plan the install before you order.

Specs

• 3000W continuous output, pure sine wave
• Input: 12V DC
• Output: 120V AC
• Two duplex GFCI outlets
• Remote control available separately (Samlex RC-300)
• Manufacturer part number PST-3000-12
• Shipping weight: 24.8 lb