Power-Surge Protector -

If lightning hits the electric service supplying your 12- volt charger, the Power-Surge Protector will help protect the charger. Simply plug the protector into a grounded outlet and plug the charger into the protector. It is designed to provide economical protection from power spikes and surges up to 6,000 volts. This has a 210-joule and faster than 1 nanosecond (nano = 10-9) rating. A red light that indicates it is working. If the light is out, it has probably done its job and needs to be replaced. Certified to CSA standard.