1. Increased MPPT charging current comparedwith conventional controllers, due to ultramodern controller technology (microprocessor)by 10 % to 30 % (efficiency > 95 %) 2. Switchable characteristic lines of chargingfor optimum charging of Gel/dryfit/AGM/fleece or acid/lead-acid, as well asLiFePO4 batteries . 3.MPPT controller Two Battery Charging Ports: Automaticcharging of the main battery or board battery (Board I): Support charging and trickle charging (max.1 A) of the vehicle's starter battery (Start II) with overcharge protection 4. Unattended Charging: Standard protectionagainst overload, overheating, reverse battery and back discharge of the battery(in case of insufficient solar power, such as at twilight, at night etc.). 5. Overcharge protection: Reduction of thecharging current of the battery in case of excessive solar power and full battery. Immediate recharging in case ofpower consumption to ensure always the best possible charging state of the battery. 6. Connection for temperature sensor ,Automatic adaptation of the charging voltage to the battery temperature. Incase of low outside temperatures, full chargingof the weaker battery is improved, and in case of summery temperaturesunnecessary battery gassing will be avoided. This is highly recommended, if the batteryis exposed to strong variations in temperature, such as in the motor compartment