My van setup has engine battery and twin leisure batteries in the back all connected & charged by the alternator when engine is running and by the solar panel when parked up . . . But there Doesn't seem to be method of recharging the batteries via 240v when on hook up,this is the Sterling B 2 B unit - should I open it up and add wires from the 240v hook up into the Sterling unit or carry a separate small 240v to 12v battery charger ?
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