MPPT Solar Controller — 100W, IP67, Compact and Efficiency Overview This MPPT solar controller maximizes energy harvest from a small photovoltaic array while delivering reliable battery charging. It provides up to 100W output with 95 percent conversion efficiency in a compact, flame retardant plastic housing rated IP67 for dust and water resistance. Key benefits Improved energy extraction: MPPT tracking optimizes panel output to extract more usable power than a basic PWM controller. conversion efficiency: Synchronous rectification design maintains up to 95 percent efficiency, including lowpower conditions. Reliable charging: Supports up to 8A battery charge current with tight voltage regulation and low noload consumption. Durable and compact: IP67 protection class, flame retardant plastic shell, and compact dimensions make it suitable for confined installations. Builtin protections: Includes short circuit protection, overheat protection, and solar input undervoltage protection to protect the controller and connected batteries. Technical highlights Output power: 100W Conversion efficiency: 95 percent Maximum battery charge current: 8A Noload current draw: 20 mA Voltage regulation: 1 percent Charge regulation accuracy: 5 percent Protection class: IP67 Material: Flame retardant plastic shell Size: approximately 63 x 32 x 18 mm (2.48 x 1.26 x 0.71 inch) Weight: approximately 2.9 oz Mechanical shock and vibration resistance: Meets SAE J1378 Models and compatibility Available output voltage models: 13.8V, 12.6V, 14.6V Applicable battery types: 12V lead acid batteries, 3string lithium batteries, 4string lithium iron phosphate batteries Photovoltaic panel recommendations: Open circuit voltage: 21 to 25V Peak power voltage: typically greater than 15.5V or greater than 16.5V depending on system setup PV input tracking voltage range: 15 to 25V (some models 16 to 25V) Starter photovoltaic input: above 17V to begin tracking Protection and safety notes The controller offers protection against short circuits, overheating, and undervoltage on the solar input. Input and output terminals must be secure and of looseness to avoid heating at connections. The device contains voltage and current components; do not disassemble unless qualified. Installation guidance Mount the controller on an iron or other metal bracket to stabilize the unit and assist heat dissipation. Allow some clearance around the controller for ventilation and access. Keep input and output cable runs as short as practical to minimize transmission losses. Ensure reliable, tight connections at all terminals. Package contents 1 x MPPT Solar Controller Typical applications Offgrid RV or marine battery charging where compact size and efficient charging matter Small cabin or remote lighting systems powered by a small PV array Portable power setups and backup battery charging for accessories and electronics This MPPT solar controller is designed for users who need compact, efficient, and reliable charging from small photovoltaic systems. Select the model voltage that matches your battery type and follow the installation notes for results.