efficiency solar charge controller designed for reliable, accurate charging of small lithium battery systems. Combines advanced tracking, precise current control, and rugged construction for stable operation in outdoor environments. Key benefits Maximize energy harvest: PWM maximum power point tracking with tracking efficiency of at least 99% and conversion efficiency up to 96% improves overall energy conversion and charging performance. Precise, safe charging: Supports 1S and 2S lithium iron battery and ternary polymer lithium battery. Operating parameters can be adjusted remotely to match battery requirements and changing conditions. Stable current delivery: Digital boost constant current control algorithm delivers efficiency and accurate constant current control for consistent battery charging. Durable for outdoor use: Allaluminum housing with a sealed, weatherresistant design withstands harsh outdoor environments and maintains steady performance. Flexible control: Remote parameter setup enables easy integration into systems that require configurable charging profiles or onsite adjustments. Key specifications and functions Tracking method: PWM maximum power point tracking with tracking efficiency no less than 99% Conversion efficiency: Up to 96% Battery compatibility: 1S and 2S lithium iron battery and ternary polymer lithium battery Control algorithm: Digital boost constant current control algorithm for accurate current regulation Housing: Allaluminum sealed enclosure for outdoor durability Remote control: Operating parameters settable via remote control Practical applications Remote solar lighting and sensor stations: Reliable charging for 1S or 2S lithium battery packs powering lighting, telemetry, or environmental sensors where stable current and remote adjustment are required. Small offgrid and mobile power systems: Efficiently manage solar input to charge lithium iron or ternary polymer battery packs on recreational vehicles, trailers, or boats. Backup and emergency power for equipment: Maintain battery readiness for communication equipment, alarms, or monitoring devices in outdoor or semiexposed installations. Why choose this controller It improves energy conversion and charging accuracy through tracking and conversion efficiencies. It supports common small lithium battery configurations and allows remote tuning of parameters for different applications. The digital boost constant current algorithm and robust aluminum housing provide reliable and stable operation in varied outdoor conditions. Specifications summary PWM MPPT tracking efficiency: >= 99% Conversion efficiency: up to 96% Battery types supported: 1S and 2S lithium iron battery; ternary polymer lithium battery Control method: Digital boost constant current control algorithm Housing: Allaluminum, sealed for outdoor use Remote parameter configuration: Supported This controller is suitable for users who need efficient solar charging, precise current control, and a durable enclosure for outdoor installations.