TecMate is the manufacturer of the OptiMate Smart Battery Chargers. Their professional charger knowledge and experience led to the design of the OptiMate battery saving charging method in 1995. This method was designed with the purpose of saving AGM, GEL and Standard (STD) lead acid batteries that have stopped working simply due to neglect. OptiMate chargers test the batteries condition at connection, decides the optimal charging method, then begins charging. A major benefit to OptiMate chargers is their 24/7 safe maintenance, which delivers the exact charge to keep the battery at 100% and supports 'always on' vehicle circuity. Optimate chargers have a very low starting voltage, and have been known to save a battery as low as 1/2 volt!