Hey Lead! Recently found your channel and love the content! Thanks for making this review - these small generators are actually exactly what I've been looking at to charge my lifepo4 battery bank (I DIY'd my own 12v 300ah solar generator). I didn't see how you were plugging in your trailer batteries from your build video, but you could make the 1000W generator work manageably by throwing in an AC to DC 30amp LiFEPO4 battery charger with an Anderson connector to limit the charging current; 30amp x 14v = ~400-450W.