Compact solar light controller designed for 1.2V NIMH batteries that delivers stable performance and easy installation. Key benefits Improved driving efficiency and longer discharge time for extended lamp operation and consistent light output. Constant current drive with a 2V solar charging module for reliable discharges and steady brightness. Supports multiple voltage input modes to accommodate different solar panel setups and simplify integration. Small footprint approximately 25x15mm for use in tight enclosures and varied lamp designs. Fiberglass construction provides dimensional stability and durability for longer service life. Clear connections and precise workmanship make installation straightforward for technicians and DIY users. Features and compatibility Designed specifically for 1.2V NIMH batteries for charging and discharge behavior. Constant current regulation reduces flicker and helps maintain LED performance under variable conditions. Multiple input voltage modes allow flexibility when pairing with panels of different output characteristics. Compact 25x15mm board fits most small outdoor lamp housings without major modification. Durable fiberglass material resists warping and supports reliable solder joints and mounting. Practical applications Solar lawn and pathway lights where steady night time illumination and longer run times are required. Small garden or decorative outdoor fixtures that need a compact controller and simple wiring. Remote or off grid signage and marker lights that use 1.2V NIMH battery packs and variable solar panels. Who this is for Installers and hobbyists building or repairing small solar lighting systems that require a dependable controller matched to 1.2V NIMH batteries. Product designers seeking a compact, efficient control board to integrate into low voltage outdoor fixtures. This controller focuses on dependable charging, constant current discharge, and straightforward installation to help improve the performance and longevity of small solar lighting systems.