Short circuit protection, reverse polarity protection, and thermal overload protection 2. Pre-Charge Safety Checklist Old Car Battery Charger - How to use it? | DIYnot Forums
: Never plug the charger into the mains power until the clips are securely attached to the battery. Plug the charger into a standard 230V mains outlet. Monitor the moving arm ammeter selmarturbo4batterychargerinstructions
Example: A 50Ah car battery on the 20-amp setting. (50 × 1.25) / 20 = Short circuit protection
do not shut off automatically, making the monitoring of the ammeter critical to prevent overcharging. Pre-Charging Preparation reverse polarity protection