This is a smart battery charger from ATEMPOWER, 25 amps. Its function is to charge batteries, and it is written that it supports types such as: • Lead Acid • AGM/GEL • Calcium • LiFePO4 It has a Reverse Charge button and a Select button to choose the battery type. Very clean, and the reason for selling is the cancellation of the car's preparation. You have the right to test it for three days.