Review on ⚡️ High Power Voltage Step Up Converter Boost Module - DC-DC 10-60V to 12-97V 1500W 30A Boost CC CV Power Supply by Mark Perry

I received the package in about 3 weeks. It was properly packaged and in good condition. I unpacked it and found absolutely NO assembly instructions. I'm an electronics technician with 15 years of military training and a radio amateur of the highest order, so I'm not an electronics fool. I connected it to a 12V battery and one of the input fuses blew immediately (no load). At this point I stopped working with the device as it was clearly defective. I started the return process with Revain, printed out the return label and found that I had to pay for shipping BACK TO CHINA to get a refund for this unit. As a technician I fully understand that hardware failures can happen and I have no problem with a device being defective - these things happen. What frustrates me is that the company wants me to pay shipping for them to get a refund. The return shipping will probably cost me more than what I paid for the module. I strongly recommend not doing business with this seller due to their return policy.