Compact MPPT solar charge controller engineered for efficient, reliable battery charging in 12V and 24V systems. Key benefits Maximizes energy harvest: MPPT tracking efficiency up to 99 percent and power conversion efficiency up to 98 percent extract more usable energy from your solar array, including in partially cloudy or variable light conditions. Reduced thermal stress: Die cast aluminum housing improves heat dissipation for stable operation under load. Automatic system compatibility: Detects and switches between 12V and 24V battery systems automatically, simplifying installation and setup. Clear status feedback: Multiple LED indicators show solar charging state and battery information at a glance. Builtin diagnostics and protection: Continuous system selfdiagnosis with fault responses for reverse polarity, overcharge, deep discharge, overload, short circuit, and reverse current to help maintain reliable operation. Multichemistry charging support: Fourstage charging for leadacid batteries including bulk, absorption, float, and equalization; twostage charging for lithium batteries with bulk and absorption modes; includes a lithium reactivation function to assist in recovering deeply discharged lithium cells and improve charging efficiency. Features and specifications MPPT technology with up to 99 percent tracking efficiency and up to 98 percent conversion efficiency. Die cast aluminum construction for enhanced heat dissipation. Automatic 12V / 24V detection and switching. Multiple LED indicators for solar and battery status. System selfdiagnostic and protective functions against common faults. Charging algorithms: bulk, absorption, float, equalization for leadacid; bulk and absorption for lithium; lithium reactivation capability. How this product solves common problems Low output in changing light: MPPT adapts to shifting panel voltage to maintain the maximum power point, improving energy capture during clouds or partial shading. Overcomplicated setup: Automatic 12V and 24V detection eliminates manual voltage selection and reduces configuration errors. Battery management concerns: Multistage charging profiles and diagnostic protection help deliver the correct charge profile for different battery types and limit damaging conditions. Typical applications Recreational vehicles and camper vans: Charge house batteries from rooftop or portable solar panels while on the road. Marine and boats: Maintain battery banks for navigation electronics, lighting, and auxiliary systems with efficient solar charging. Offgrid cabins, sheds, and remote power systems: Provide reliable battery charging for lighting, pumps, and small appliances in locations without grid power. What to expect Straightforward installation into 12V or 24V DC battery systems. Improved energy yield from solar panels and consistent charging behavior across leadacid and lithium battery chemistries. Visual status indicators to monitor charging and battery state without specialized tools. This MPPT charge controller combines tracking and conversion efficiency, durable die cast aluminum construction, automatic voltage detection, and comprehensive charging and diagnostic functions to deliver a dependable charging solution for a wide range of small offgrid and mobile solar applications.