Solar controller MPPT Carspa MH-R2440, 12/24V, 40A

Professional MPPT controller designed for charging 12 / 24 V lead-acid and LiFePO4 batteries with solar energy. Compared to cheaper PWM type loss regulators, these regulators achieve much higher efficiency (up to 98%) and ensure maximum energy yield from solar panels. AGM, GEL and LiFePO4 sealed batteries are supported, the voltage is detected automatically. A comprehensive LCD display shows voltage of the solar panels and the battery, charging current, state of charge, load current, temperature or error code in case of a fault. At the same time, a thermocouple for charging temperature compensation is included. The connected DC load can be switched manually by the controller or simply programmed (e.g. twilight switching with a timer). A sophisticated protection system prevents the controller, solar panels and battery from damage or incorrect connection.

- MPPT technology for monitoring the maximum performance of the panels
- adaptive multi-stage battery charging
- automatic detection of 12 / 24 V
- support for lead AGM / GEL and LiFePO4 batteries
- advanced battery and panel protection system for higher safety
- TVS lightning protection
- clear LCD display, LED indicators of operating status
- programmable DC load switching
- absolutely silent passive cooling
- sensor for charging temperature compensation
- communication port for monitoring


Technical parameters

Battery voltage: 12 / 24 V (auto detection / manual setting)
Max. panel power: 550 W / 12 V, 1100 W / 24 V
Max. panel voltage (Voc): 100 V (25°C), 90 V (-25°C)
Max. regulator current: 40 A
Battery voltage range: 9 to 35 V
Battery type: AGM, GEL, Sealed, LiFePO4, user defined
MPPT voltage range: battery voltage +2 V to 75 V
Voltage conversion efficiency: 98 %
MPPT tracking efficiency: > 99 %
Protection against: PV and battery overvoltage, PV overpower, overcurrent, total battery discharge, battery overcharge, short circuit, reverse polarity, DC load output overload, lightning strike (TVS)
Max. capacitive load: 10,000 uF
Max. DC load current: 20 A
Output programming: manual switching, twilight switching, twilight timer, permanently on, test
Temperature compensation: -3 mV / °C / 2 V (default)
Temperature sensor: included in the package
Communication: RS232 / RS485
Own consumption: 0.7 to 1.2 W in standby
Operating temperature: -35°C to +45°C
Max. n.m. altitude: 3000 m
Dimensions: 238 x 173 x 72.5 mm
Weight: 2 kg
Protection rating: IP32