The charge controller DuoRacer MPPT is designed to charge two batteries (shown as BATT1 and BATT2 below) simultaneously in a solar system. This controller supports multiple types of batteries, including Sealed, Gel, Flooded, LiFePO4 and Li-Ni,CoMn, which is suitable for RV, Camper, Boat and so on. The device recognizes the battery system voltage (BATT2)
automatically and charges the battery when conditions are met.

The controller adopts the advanced MPPT control algorithm, which will minimize the maximum power loss rate and time loss, also quickly realizes the maximum power point (MPP) of the PV array and delivers the maximum power from the solar array under any conditions .

Energy usage in MPPT solar system increases by 20-30% compared to PWM charging method. When there is no manual operation for a long time and the charging conditions cannot be reached, the controller will turn to low power mode, which reduces the loss and waste of battery power to improve the service life of the products.

The system parameters are set by the LED / LCD screen or the MT11 remote meter (Accessory). The AES control signal of the car refrigerator is built into the controller, which will supply the excess solar energy to the refrigerator to avoid wasting energy.

The controller has an IP33 protection level, which is waterproof and dustproof. Multiple protection features, such as battery overcharge protection, discharge protection and reverse connection protection of PV and battery, which effectively ensures the safety, stability and life of the solar system.