Battery MINDer. New technology has come to battery maintenance devices in the form of our new BatteryMINDer. It is a three-mode charger/maintainer/conditioner that extends the performance and life of all types and sizes of lead-acid batteries. Perhaps the most noteworthy new feature is its ability to dissolve harmful power-robbing sulphation (the number-one cause of early battery failure) using safe, patented high-frequency pulse technology. Guaranteed to never over-charge a battery, regardless of how long its connected. Charges at 1.3 amps so its best use is the maintenance of healthy batteries and the prevention and removal of sulphation.