LiTime 12V 40A DC to DC Battery Charger fit for 12V LiFePO4, Lead-Acid, SLA, Gel, AGM and Calcium Batteries, 3-Stage Charger for RVs, Boats and Yachts

Keeps them topped off 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!!!!!!!!

Charger Wish it had blue tooth

Affordable charger 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..

Need support help please... it drains my starter battery and I can't figure out why? Please help. Thanks

The cable size is right there above 6 or 8 awg. Go larger if unsure.

Bought this for charging lithium batteries in my trailer - Important considerations 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.

40 a DC/DC 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.

Have not installed my 40amp DC-DC charger because I haven't gotten the wiring yet. I wanted to have it ready when the charger got here but no one could tell me what size wiring it set up for.

Installed the 40 amp Dc to Dc with MPPT in our trailer, using 6 AIG cable from the truck engine to the rear bumper, and the same 6 gauge for the trailer wiring using the connectors provided. Hooked it up to my 2 LiTme 100 ah lithium batteries, and then connected to my solar panel input. Installed 60 amp breaker on the truck wiring, a 50 amp breaker for the wire to the batteries, and a 30 amp breaker on my solar input line. Was able to select the battery type, but noting else works. Had solar panels sending out 20 - 22 volts but nothing on the unit indicating solar coming in. The “on” light never illuminated, just the “LI” light for battery type. Checked continuity on all wires, and everything is good. Called customer support, and got no answer. Sent an email over 30 hours ago, and still no response. Made 3 more calls this evening, after 8PM EDT, to be within the posted customer support hours, and was disconnected after 1 minute of listening to music each time. A defective product from a company that you cannot contact. What a ridiculous way to do business. I thought I had chosen a better company, but will try Renogy or Victron to see if I can get a product that works. It looks like wasted money dealing with LiTime.

Zero support, worthless