60A MPPT Solar Charge Controller w/ Bluetooth Module Rapid, Efficient and Safe Charging It has up to 99% tracking efficiency to allow you to charge the battery from solar panels at the maximum power point! Capable of automatically detecting 12V/24V/36V/48V battery systems, this crucial system component can also work with all popular battery types, such as Sealed, AGM, Gel and Flooded. The controller also has self-diagnostic capability and will highlight any system errors using advanced fault-targeting technology. The LAC Solar 60A Charge Controller is the most efficient type of charge controller. With up to 99% tracking efficiency, the charge controller ensures maximum power point solar charging that gets more energy to your battery bank. Capable of automatically detecting 12V/24V/36V/48V lead acid battery systems, this crucial component is preset to also work with Gel, Flooded (wet cell), Sealed, and even Lithium batteries.