100A MPPT Solar Charge Controller Key benefits Maximizes solar harvest with advanced MPPT tracking. The controller uses an MPPT algorithm to find the maximum power point in changing conditions, with tracking efficiency not less than 99.5 percent. This increases overall system energy yield and improves battery charging speed. Flexible system compatibility. Automatic DC voltage detection supports 12V, 24V, 36V, and 48V battery systems. Works with GEL, Flooded, and LifePO4 battery types. Built for safety and reliability. Multiple built in protections guard against battery overvoltage, overcurrent, power failure, overcharge, deep discharge, reverse connection, and overheating. Core features Rated current: 100A. MPPT solar controller with USB 5V charging port for convenient device charging while tracking PV output. Automatic battery voltage identification for 12V, 24V, 36V, and 48V systems. Maximum photovoltaic open circuit voltage ranges: 12V battery: 15 to 23V 24V battery: 30 to 45V 36V battery: 45 to 69V 48V battery: 60 to 90V Maximum PV input power: 12V battery: 1200W 24V battery: 2400W 36V battery: 3600W 48V battery: 4800W Housing material: ABS. User interface and modes Backlit multifunction LCD with clock display provides dynamic readouts of operational data and status, including working mode, battery voltage, photovoltaic charging current, battery discharge current, product operating temperature, and delay time. Seven working modes for versatile control: Charging mode Light control mode for automatic day and night operation Light and delay control mode with programmable delay up to 23 hours 59 minutes Universal control mode for continuous discharge Manual control mode for on demand switching Timing control mode for scheduled on and off cycles Test mode for quick verification, similar to light and delay control with a fixed short delay Light control behavior: when night is detected the controller delays ten minutes before enabling load output, and when daytime is detected the controller delays ten minutes before disabling output. Manual override: press and hold the down button on the touch interface for five seconds to force continued discharge output when needed. Safety and protection Comprehensive protections for common PV system hazards, including overvoltage, overcurrent, reverse connection, overcharge, deep discharge, power loss, and thermal shutdown. These protections help preserve battery life and prevent damage to connected equipment. Compatibility and use Supports GEL, Flooded, and LifePO4 battery charging profiles for correct and safe charging. Designed for small to large off grid PV installations up to 4800W depending on system voltage. Material and build suitable for installation in household, recreational, and light commercial environments. Typical applications Off grid cabin or holiday home: Manage battery charging and lighting automatically with light control and timing modes while maximizing solar input with MPPT tracking. Recreational vehicle and boat systems: Charge onboard batteries efficiently, power LED lights, and provide USB charging for devices while on the move. Remote pump or lighting installations: Run scheduled loads and protect batteries from deep discharge with flexible timing, manual override, and robust safety features. What is included 1 x Controller How to use highlights Charging guideline: avoid discharging the battery during the charging process. Use the light control and light and delay modes to automate night time loads with configurable delay times. Use general control mode for continuous load operation when required. Use timing control mode to schedule regular on and off cycles. Use test mode to confirm settings quickly. This 100A MPPT solar controller combines tracking efficiency, flexible control modes, and multi battery compatibility to improve solar energy utilization and simplify system management.