The 12 Volt 1.5 AMP BatteryMINDer® Model 1215C charges, maintains and dissolves sulfate from older batteries. It is a true seven (7) stage charger with full-time High Frequency (not high voltage) desulfation. It is temperature-compensating to prevent over/undercharging regardless of how long left connected. Ruggedly built to withstand harsh conditions found under the hood and in hot/cold temperatures. Waterproof to International Standard (IP65). Complete with two mounting brackets for multiple vehicles/locations, fully-insulated battery clips, ring terminal-assembly for permanent direct-to-battery attachment.