20A MPPT Solar Charge Controller 12V/24V Negative Grounded Controller with Built-in Bluetooth and Lithium Battery

Model M2420 M2430 M2440 Battery System Voltage 12V/24V Auto (FLD/GEL/SLD) Manual(Li/User) No-load Loss 12 ma(12V),10ma(24V) Max Solar Input Voltage <100Voc Rated Solar Charge Current 20A 30A 40A Max Solar Input Power 300W/12V 600W/24V 450W/12V 900W/24V 600W/12V 1200W/24V Light Control Voltage 5V*n Light Control Delay Time 10s Max Load Output Current 20A Operating Temperature -35ºC ~ +45ºC IP Protection IP32 Net Weight 1.0 kg 2.0 kg 2.0 kg Communication Port RS485 Operating Altitude ≤ 3000 meters Controller Dimension(mm) 180*140*71 245*180*82.5 By continuously checking solar panel power output changes, the controllers employ multiple MPPT charge algorithms in combination to boost charging efficiency in different weather and temperature conditions.Built-in buffer, allows max 25% exceeding rated power input.charging modes available for most common deep-cycle battery types i