Compact MPPT solar charge controller designed for reliable battery charging and maximum solar harvest in small to medium off grid systems. Key benefits Maximizes energy harvest: MPPT tracking efficiency greater than 99 percent and conversion efficiency up to 98 percent help extract and deliver the most usable power from solar panels. Handles partial shading and panel faults: Double peaking and multi peaking tracking technology finds the true maximum power point when the IV curve has multiple peaks. Low standby consumption: No load loss is 0.4 W or less, reducing parasitic drain on battery systems. Broad battery and system compatibility: Automatic system voltage selection supports 12 V, 24 V, 36 V and 48 V systems and accepts battery voltages from 9 V to 64 V. Wide MPPT operating range and safe inputs: Maximum solar input voltage 180 V at 25 C and 150 V at 25 C. MPPT operating range is battery voltage plus 2 V up to 150 V. Core specifications Item type: MPPT solar controller Rated load current: 40 A System voltages supported: 12 V, 24 V, 36 V, 48 V auto Battery voltage range: 9 V to 64 V Maximum solar input voltage: 180 V (25 C); 150 V (25 C) Maximum power point voltage range: Battery voltage + 2 V to 150 V Conversion efficiency: up to 98 percent MPPT tracking efficiency: greater than 99 percent No load loss: 0.4 W or less Temperature compensation: 2 mV per C per 2 V, default Operating temperature: 10 C to +65 C Altitude: up to 3000 m Material: ABS Protection class: IP21 Communication: supports RS485 How it solves common problems Reduced energy loss from partial shading: Multi peak tracking finds the operating point even when some cells or panels are shaded or damaged. Protects battery health and performance: Wide battery voltage compatibility and temperature compensation help maintain appropriate charging as temperatures change. Simple integration: Auto detection of system voltage and a wide MPPT input range make the controller suitable for many battery banks and panel configurations. Typical applications Off grid cabin or tiny house: Charge a battery bank for lighting, refrigeration and small appliances. RV, camper or marine systems: Manage solar charging for mobile battery systems while minimizing energy loss under variable conditions. Remote power for telecom, monitoring or agricultural equipment: Reliable charge control where panels may face intermittent shading or non orientation. Basic installation and use Install and wire following the included instruction manual. Verify solar array open circuit voltage does not exceed the specified maximum at the lowest expected ambient temperature. Allow the controller to auto select system voltage and monitor status through RS485 communication if required. What is included 1 x Solar controller 1 x Instruction manual 4 x Screw 4 x Expansion screw