12V/24V Solar Charge Controller (Available 10A, 20A, 30A, 40A, 50A, 60A) This solar charge controller automatically detects 12V or 24V battery systems and manages charging and load control for a variety of battery types. Multiple current ratings are available, including optional models 12V/24V 30A, 12V/24V 40A, 12V/24V 50A, and 12V/24V 60A. Key benefits Automatic system identification: Automatically switches between 12V and 24V systems for plugandplay setup. Flexible model range: Choose from 10A, 20A, 30A, 40A, 50A, or 60A charging current to match system size. Broad battery compatibility: Preset profiles for colloid lead, sealed lead, lithium iron phosphate, and manganese lithium batteries, plus a userdefinable profile. Reliable protection and temperature management: Overtemperature throttling and battery temperature compensation help protect battery life and controller performance. Useful interfaces: RS232 and RJ45 communication plus a 5V/0.5A USB output for monitoring and small device charging. Core specifications Rated voltage: 12V/24V automatic identification Battery maximum voltage: 15V / 30V / 60V Solar panel maximum voltage: 22V / 44V / 88V Rated charging current options: 10A, 20A, 30A, 40A, 50A, 60A Charging line voltage drop: 0.7V Discharging line voltage drop: 0.2V Static power loss: 0.2W Communication: RS232 and RJ45 USB output: 5V, 0.5A Overtemperature protection: below 75 C full current; 75 C to 90 C half current; above 90 C output off LCD display operating temperature: 20 C to 75 C Working environment temperature: 20 C to 50 C Storage temperature: 30 C to 70 C Protection grade: IP30 Battery charge parameters (values at 25 C; 24V values are twice the 12V figures; 48V values are four times) Battery types supported: colloid lead, sealed lead, lithium iron phosphate, manganese lithium, userdefined. For each battery type the key voltages are: Overdisconnect voltage (V): colloid 15.5; sealed lead 15.5; LiFePO4 13.2; manganese 14.4; user 1316 Overvoltage recovery (V): colloid 14.8; sealed lead 15.0; LiFePO4 12.6; manganese 14.0; user 1316 Equilibrium voltage (V): colloid 14.6; sealed lead 14.6; LiFePO4 12.4; manganese 13.8; user 1315 Enhance voltage (V): colloid 14.2; sealed lead 14.4; LiFePO4 12.2; manganese 13.6; user 1315 Floating voltage (V): colloid 13.6; sealed lead 13.8; LiFePO4 12.0; manganese 13.2; user 1214 Undervoltage recovery (V): colloid 12.6; sealed lead 12.8; LiFePO4 11.5; manganese 12.6; user 1113 Undervoltage shut down (V): colloid 10.8; sealed lead 10.8; LiFePO4 9.6; manganese 10.5; user 911 Equilibrium duration (min): colloid N/A; sealed lead 120; LiFePO4 120; manganese 120; user 60180 Enhance duration (min): colloid 120; sealed lead 120; LiFePO4 120; manganese 120; user 60180 Light control settings Turnon voltage: default 8V (range 6V to 10V) Turnoff voltage: default 4V (range 2V to 8V) Temperature compensation Range: 0 mV/deg C to 8 mV/deg C per 2V (based on 25 C) Default: 4 mV/deg C per 2V Mechanical and installation details Wire terminal crosssection recommended by current rating: 10A: 2.5 mm2 20A: 6 mm2 30A: 10 mm2 40A: 10 mm2 50A: 16 mm2 60A: 16 mm2 Controller size: Smaller models (10A, 20A, 30A): 153 x 94 x 46.5 mm (6 x 3.7 x 1.8 in) Larger models (40A, 50A, 60A): 207.5 x 129 x 69.5 mm (8.2 x 5.1 x 2.7 in) Net weight: 10A: 0.35 kg 20A: 0.38 kg 30A: 0.40 kg 40A: 1.30 kg 50A: 1.35 kg 60A: 1.40 kg Practical use scenarios Offgrid cabin lighting and battery charging: Pair a 12V or 24V battery bank with solar panels and select the controller current rating that matches panel output and battery capacity for reliable daytime charging and dusktodawn load control. RV or marine power management: Use the controller to maintain house batteries, provide USB power for small devices, and protect batteries with temperature compensation during travel or seasonal temperature changes. Small commercial or remote telemetry sites: Integrate via RS232 or RJ45 for monitoring, set battery profile for sealed lead or lithium chemistry, and rely on overtemperature protection to maintain system uptime. What this controller solves Simplifies setup by automatically identifying 12V or 24V systems and applying appropriate charging algorithms. Protects batteries with selectable profiles, temperature compensation, and overtemperature current limiting. Provides communication options for system monitoring and a USB output for convenience. Compatible battery chemistries and userdefinable settings allow tailoring to specific installations while the range of current ratings supports small to medium offgrid power needs.