LiTime 12V 40A DC to DC Battery Charger

Initial quality seems great, working dandy so far in the van. More technical instructions on how to hook up ignition control wiring would have been appreciated.

I bought this to charge my lithium batteries in my teardrop camper trailer. I wanted to be sure while I was driving down the road that my batteries would be safely charged from the alternator. When I went to mount it in my camper and connect it to my vehicle's power (through the plug from the tow vehicle), it would not charge properly due to the wire size coming from the car being too small. I believe the wires in my camper from connector to the vehicle are 12 gauge. It would start charging, then stop and reset. The manual indicates that the wire size from the vehicle to the battery needs to be 6 AWG. That's big wire. I finally tested it right next to my tow vehicle's battery with large gauge wire and the battery being charged right next to it and it worked when I did that. I could mount it inside my tow vehicle, but then I'd need to have a special power connector / large wires just for the charging to my trailer. I would also need to drill holes in my camper to get the new wires in. That solution is unworkable for me, so I am forced to return it. Disappointed, but you cannot change the laws of physics. I wish I would have known this prior to buying it.

Have two of the Li Time lithium batteries in our conversion van. Although he inverter charges them while plugged into shore power, it's really nice to know that they're also topped off while driving. Using only the 20A charge rate but it works great and gives us more peace of mind.

BTW, the batteries are also super!!!!!!!!

Wish it had blue tooth

product is will made, manual, mounting screw. slightly bulky but peeping in the inside I could see why with bigger coil and electronics. Not installed yet due to electrical work in progress..