On board battery circuit with comprehensive protections Provides anti overcharge, anti over discharge, anti overcurrent, anti short circuit, and anti reverse connection protection. Includes balanced charging to help maintain battery health and stable operation. Documentation included Comes with a supporting information manual to assist setup and operation. Real time monitoring via I2C Battery current, power and residual power can be read through I2C communication. Enables real time detection of the module's operating state for reliable status monitoring. Easy integration with wired interfaces Various interfaces are brought out through wired connections, enabling straightforward integration into trolley systems and industrial control equipment. Use scenarios Trolley systems: Ideal for powered hospital, warehouse, or service trolleys requiring safe charging, protection, and real time status monitoring. Industrial control equipment: Suitable for control panels and automation systems that need real time battery data and safe charging management. Mobile or remote battery packs: Works with applications where wired interfaces and protective charging are essential for safety and reliability.