Model Tracer5210BP — MPPT solar charge controller designed for 12V or 24V systems with automatic voltage detection. Why choose this controller Maximizes energy harvest with advanced MPPT tracking that identifies and follows multiple power points, delivering tracking efficiency no less than 99 percent and maximum conversion efficiency up to 98 percent. Flexible battery compatibility: supports sealed, gel, flooded leadacid, LiFePO4 and Li(NiCoMN)O2 lithium batteries, plus a userdefined battery type option. Built for remote and unattended systems: RS485 communication with Modbus protocol, mobile app and PC monitoring support, and compatibility with IoT/cloud monitoring modules. Compact, rugged design with aluminum housing for improved heat dissipation and reliable operation across a wide temperature range. Key specifications Model: Tracer5210BP Nominal system voltage: 12V/24V DC auto Battery input voltage range: 8.5 to 32 V DC Rated charge current: 20 A Rated discharge current: 20 A Rated charge power: 260 W at 12V, 520 W at 24V Maximum PV open circuit voltage: 100 V (at minimum operating temperature); 92 V (at 25 C) Communication interface: RS485 (waterproof connector), Modbus protocol Operating temperature range: 40 C to 60 C Dimensions (L x W x H): 153 x 105 x 52.1 mm Net weight: 1.2 kg Core features and functions MPPT charging with ultrafast tracking speed to extract maximum power from PV arrays. PV power limitation function to prevent array oversizing from exceeding controller limits. Lithium battery selfactivation and low temperature protection to maintain battery health and reliability. Multi load control modes to support timed, dusktodawn, and custom load control strategies. Realtime energy statistics for monitoring production and consumption. RS485 connector can supply power for communication devices, simplifying system wiring. Compact aluminum housing for effective cooling in compact installations. Broad temperature tolerance for use in extreme climates. Builtin protection features for common electrical faults and battery safety. Compatibility and installation notes Designed for offgrid solar systems using 12V or 24V architectures. Accepts a wide range of battery chemistries and voltages; userselectable battery parameters. Use a PV array with opencircuit voltage within the specified limits for safe, reliable operation. RS485 communication allows integration with monitoring software and thirdparty IoT modules for centralized system oversight. Typical applications Small offgrid solar home systems and cabins where efficient charging and battery management extend runtime. Solar street lighting and garden lighting installations requiring timed load control and reliable night operation. Traffic signals, remote signage, and other standalone equipment that need robust charging, monitoring, and dependable performance in harsh environments. What it delivers Efficient solar charging with flexible battery support and remote monitoring capability. A compact, durable controller that balances performance, connectivity, and practical installation features for a wide range of small to medium offgrid solar projects.