This 800W inverter is a really good device. I've used it with a 29.4V (max) lithium battery and it works great. The only problem I had was that the cables that came with the inverter were only rated for 250w and I had a significant voltage drop when using them, the inverter beeped and I didn't like it. I replaced the wires with 4AWG copper from WindyNation on Amazon and did some extra outputs from my BMS battery to handle the higher inrush currents and it all works great!
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