Introducing the Rocksolar 20A MPPT Solar Charge Controller, a highly efficient and versatile solution for managing your solar power system. This advanced charge controller is compatible with both lithium and lead-acid batteries, ensuring optimal charging and prolonging battery life. With a maximum open voltage of 75Vdc and an MPP tracking efficiency of 99.5%, this device maximizes solar energy harvesting while minimizing power loss. The 3-stage charge algorithm and 12/24V nominal system voltage guarantee a safe and efficient charging process. Boasting a rated charging current of 20A and a battery voltage range of 8-32V, the Rocksolar 20A MPPT Solar Charge Controller can handle various system configurations. The high voltage disconnection of 16V (24V x 2) and low voltage disconnection of 10.8V protect your battery from overcharging or excessive discharge. Designed to withstand harsh environments, this charge controller has an operating temperature range of -20°C to 55°C and an IP30 rating for protection.