Renogy DC to DC Battery Charger 12V 40A, Intelligent Converter for Flooded, Gel, AGM, and Lithium Batteries, for RVs, Truck, Motorhome, Commercial Vehicles, Boats and Yachts

I live on a narrowboat and depend on something to charge my domestic batteries in winter. This replaced my previous Renogy DC-DC which had served me well, despite being a rebranded unit and wildly inefficient.This one is so much easier to install, with the voltage sensing functionality and appears to be far more efficient, drawing less power to charge more effectively. Easy to set up wit the one button function.My only frustration is the same as most Renogy products, the Bluetooth is a separate purchase.

Excellent item easy to set up and working very well

Great piece of kitEasy to installSpeedy delivery

This 40 Amp DC charger works for a few seconds at a time, delivering less than half an Amp. Customer service from Renogy is insultingly bad - they just ignore you for weeks on end and simply refuse to do anything while still claiming they are trying their best to solve the problem.Avoid like the plague.

Arrived quickly and works great. Make sure to use mega or nano fuses as the resettable one I first tried led me to think the charger was faulty as it was only allowing 3.5amps through it. Bypassed the fuse and it was then working perfectly at outputting the full 60amps.

Lost points on instructions. But dose a really good job of charging the liesure batteries. Can't just connect negative to anywhere. I need to run in another negative. Cable to front of van is picks up a feed from itself and keeps charging, until turned off then starts again as soon as van started. Not great at wire sizing. As information hard to find. I just used 16mm cable a bit of over kill.

Works as it should. Easy to install. Great!

thank you