Product: 400W MPPT Solar Battery Charge Controller Key benefits Maximizes solar harvest by tracking the maximum power point in real time, so you get more usable energy from panels with different voltages. conversion efficiency up to 95 percent through a synchronous rectifier boost design, improving performance even in low light or low power charging conditions. Flexible battery support with adjustable output voltage for compatibility with both lead acid and lithium battery systems. Durable for outdoor use with an IP66 rated enclosure that is waterproof, dustproof, and shock resistant. Simple integration into small to medium offgrid and mobile solar systems thanks to its 400W rated power. Features and performance Realtime MPPT tracking: Continuously finds the operating point of connected solar panels to increase charging efficiency and power extraction. Synchronous rectifier boost architecture: Efficient DCDC conversion minimizes energy loss and maintains charging performance under low input conditions. Adjustable output voltage: Configure charging voltage to meet the requirements of acid or lithium chemistries and protect battery lifespan. Rugged IP66 housing: Designed for exposed installations where protection from water, dust, and vibration is required. Rated power: 400W suitable for small offgrid systems, RVs, boats, and backup battery assemblies. Compatibility and application Compatible with a wide range of solar panel voltages due to MPPT capability. Works with both lead acid and lithium battery banks when the output voltage is set appropriately. Practical use scenarios Recreational vehicle and boat systems: Charge onboard battery banks more efficiently while on the move or at anchor, reducing generator run time. Small offgrid cabin or workshop: Power lighting, communication equipment, and small appliances by maximizing available solar generation for a 400W array. Remote monitoring station or backup power: Keep battery backup charged reliably in outdoor environments where durability and consistent charging are required. What this controller solves Reduces wasted solar energy by continuously optimizing panel output. Improves charging performance in varied light conditions and with panels of differing voltages. Eliminates compatibility concerns by allowing output voltage adjustment for common battery types. Protects electronics and maintains operation in harsh outdoor settings with a robust IP66 enclosure. Technical summary Rated power: 400W Tracking: Realtime MPPT Conversion efficiency: Up to 95 percent Topology: Synchronous rectifier boost Output: Adjustable for acid and lithium batteries Protection level: IP66 This 400W MPPT solar battery charge controller delivers efficient, flexible, and durable charging for small to medium solar installations, combining advanced power tracking with an adjustable output and robust outdoor protection.