MPPT Solar Charge Controller MC2420N10 MC2430N10 MC2440N10 MC2450N10 Description This MPPT solar charge controller delivers conversion efficiency and reliable battery management for 12 V and 24 V systems. It is designed for off grid power systems, RVs, boats, cabins and small solar installations where maximum energy harvest and battery protection are required. Available models cover rated charging currents of 20 A, 30 A, 40 A and 50 A. Key benefits Higher energy harvest: advanced digital power technology achieves charging conversion efficiency up to 98 percent and MPPT tracking efficiency more than 99 percent, increasing usable power from panels. Stable battery charging: active charging voltage regulation maintains rated charging voltage at battery open circuit or when a lithium battery BMS triggers overcharge protection. Flexible battery support: selectable charging programs support multiple battery types including lithium, colloidal, sealed lead acid and vented batteries. Prevents overcurrent from oversized arrays: current limited charging mode reduces PV charging power automatically when panel output would otherwise exceed the controller rated current. Low standby drain: zero load loss is less than 10 mA for minimal battery draw when no load is present. Main functions and performance System voltage supported: 12 V and 24 V Battery voltage range: 9 V to 32 V Maximum PV open circuit voltage: 92 V at 25 C; up to 100 V at lowest ambient temperatures Maximum power point voltage range: from battery voltage plus 2 V up to 72 V MPPT tracking efficiency: more than 99 percent Charging conversion efficiency: up to 98 percent Temperature compensation coefficient: minus 3 mV per 2 V default; lithium battery modes do not use temperature compensation Operating temperature range: minus 35 C to plus 60 C IP rating: IP32 Communication: TTL series communication Maximum operating altitude: 3000 meters Model specific ratings MC2420N10 Rated charging current: 20 A Maximum PV input power: 260 W at 12 V, 520 W at 24 V Weight: 650 g Dimensions: 150 mm x 105.6 mm x 61.5 mm MC2430N10 Rated charging current: 30 A Maximum PV input power: 400 W at 12 V, 800 W at 24 V Weight: 830 g Dimensions: 150 mm x 105.6 mm x 67.5 mm MC2440N10 Rated charging current: 40 A Maximum PV input power: 550 W at 12 V, 1100 W at 24 V Weight: 1040 g Dimensions: 183 mm x 127 mm x 65.5 mm MC2450N10 Rated charging current: 50 A Maximum PV input power: 660 W at 12 V, 1320 W at 24 V Weight: 1335 g Dimensions: 183 mm x 127 mm x 69.5 mm Practical applications Remote cabin or off grid tiny house: Maintain deep cycle battery health and maximize solar harvest where grid power is not available. RV and marine systems: Charge battery banks efficiently while minimizing heat and energy loss, and protect battery from overcharge through active voltage regulation. Small commercial or agricultural installations: Manage multiple battery chemistries and automatically limit charging current when panel output exceeds controller rating. What is included and compatibility notes Controller only. Available in models corresponding to rated current and dimensions above. Works with 12 V and 24 V battery systems. Compatible with lithium and various lead acid battery types as selectable in charging programs. Ensure PV array open circuit voltage does not exceed specified maximums for safe operation. This controller is suited for installers and system builders who need a compact, efficient MPPT regulator that supports multiple battery chemistries, delivers stable charging under varying conditions, and minimizes wasted energy.