NEMO DX1230 DC -DC charger from TBB Power is a simple but perfect in-vehicle charging solution. It draws power from alternator to perform a multistage quick charging to auxiliary battery while you are driving.  IP65 Compatible with Euro 6 engine (Smart alternator) Right charging solution to protect auxiliary battery by regulating voltage and controlling current Lithium battery compatible Built-in automatic temperature and voltage compensated battery With function of battery isolation to protect starter battery IP65 design Support auxiliary battery (AGM, GEL and WET, LIFEPO4)