I want to charge 12S from my van will this work?

Just remembered a thing, I read that you can run two boosters in parallel to increase the output. This might give you a decent charge off the one 12v car battery

If you want to charge from your van, get an inverter that makes 120VAC from your van then use the same charger you use at your house, plugged into that. Otherwise this sounds like a big fire hazard

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You can also definitely get a cheapo one that’s low wattage, you won’t be needing to pump 300 watts into your battery hopefully :sweat_smile:

I did a quick back-of-the-envelope calculation that 4A*50V ~ 200W and then suggested a 300W one that will almost certainly work.

If you did more work you could probably get by with a cheaper one, but the bigger one will be better anyway and probably last longer. It’s also not every expensive.

Besides, you may want to charge a cell phone and run something else while charging your board…

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