48V 60V 72V to 12V 20A Buck Converter 240W Step Down DC to DC Converter Transformer Reducer for Golf CART Scooters & Bicycles

The first unit I received was defective and returned. The replacement works great. I am using a 80v Kobalt weedeater battery to power my 12v deisel shop heater with a 10 amp draw.works great

This item is rated for 20 amps with up to 90 DC volts. I have been operating this for converting voltages from a Solar Panel with a voltage output of 80 Volts and 10 amps, yet it has failed sometime in the past 2 weeks. Temperatures in the garage where it is located have not been more than 80 F, so I do not understand why early failure of this device. I contacted Amazon, but the warranty information says to contact the seller, or manufacturer, which I have been unable to do so far. Not really sure about the water resistance, it is located indoors away from water, so I gave it an average rating there.Update: seller offered a refund, but when I answered, no refund was made. Amazon has closed Return or Replace windows on this product. I would appreciate if seller made good on offer, and would then update my review.

Right now I'm just confused because the cover mentions a Blue wire but there is no blue wire, only a green one, which I assume is the key switch input. But, the Blue wire is supposedly the negative output so I really hope I don't end up connecting an input to an output.Also, there was a pigtail mentioned but mine didn't come with a pigtail but a plug that fits the end of the wire protruding from the case and the user has to assemble it.

Easy to use and works great

I'm using this to drop 24V DC down to 5 VDC for several Pi3s I have running in my make shop. I have a couple of 3D printers running off one Pi and a laser etcher on another. The Pi complains about not having enough power all the time until I connected this supply. It's direct 5V and skips the flaky micro USB port. It's an easy upgrade to make and I recommend it for 3D printer enthusiasts. Oh, and Klipper - get that firmware if you want awesome speed.