Review on ⚡ Cllena Golf Cart DC-DC Voltage Reducer Converter - 36V/48V to 12V Buck Transformer Regulator Power Supply 30A 360W by Albert Tucker

Works great! I was a little concerned about this as I didn't see anyone with the settings I was trying to achieve in my van. But basically I installed 12kW lithium batteries in my 5th wheel but they are all 48v so I still had to leave the old flooded lead acid batteries for all the lights, slides, jacks etc. I took 4 of these and connected them to my 48 volt lithium battery and then connected the other end directly to the same wire as the old 12 volt batteries. Gives me 120 amps of electricity to keep all connections working properly and the light stays on. Most importantly it saved me a ton of space and weight, these things are tiny and I only made a piece of wood to mount them and get them out of the way.