The Maximum Power Point Tracking is a mechanism that can harvest maximum power from solar array. The tracking algorithm is fully automatic and does not need operator adjustment. Under most conditions, this MPPT will boost the charging current if the V_MP is sufficiently higher than the present battery voltage. This MPPT charger has a 3-stage battery charging algorithm to charge the battery quickly with highest efficiency and safety.

Bulk Stage: In this stage of charging, maximum available solar power at that instant will be pushed into the battery, until the battery voltage reaches to the Bulk voltage set point.

Absorption Stage: During Absorption stage, the controller will maintain the battery voltage to Bulk voltage set point for a predefined period known as Absorption-Time. This is also known as constant-voltage (CV) charging. This will prevent the battery from heating and excessive gassing.

Float Stage: After completion of the absorption stage, float charging will start. During Float stage, the controller will try to maintain the battery voltage to Float voltage set level.

All the parameters viz. Bulk Voltage, Float Voltage, float Cancel Voltage, Absorption duration are settable. These parameters setting is required for various system voltage and type of battery.