Review on FOXWELL FBA_BT100 Analyzer Automotive Directly by Chris Edgerton

Used this on a supposedly dead car battery that was 4 years old. It was rated 650 CCA and about 110 when tested. I took the battery to the store to have it checked and their machine, which looked much larger and more expensive, rated it a 97 which was actually a dead battery anyway. I've seen some reviews where this unit asks about the ambient temperature if it's above or below freezing. My block didn't ask me for the temperature. Maybe that's why the tester at the store rated my battery lower than his device actually asked for, and it could make a difference in the calculations. It was a cold day and it was below freezing. In any case, close enough for my needs.