Review on Dkplnt Automatic Converter Waterproof Transformer by David Batte

I have a 12Ah LiFePo4 battery that normally charges to 13.6V ) which uses a 12V -Has power input plus 3 Noctua NF-A8 PWM 12V fans. Not sure how this will perform in the long term (i.e. 12.3v is too much for the nano), but so far so good. Connecting is easy. Two wires to the battery, two wires to the load. I added a fuse to the input and output. Measurements: Output voltage no load: 12.36V Output voltage with 250mA load: 12.31 Current draw no load: 12mA I don't draw enough current to really load it so it doesn't get warm. much up.