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Wide Compatibility with USB, Type-C and QC Protocols Supports mainstream fast-charging protocols such as PD (Power Delivery), QC (Quick Charge) and standard USB output, making it suitable for phones, tablets, PCs, tools and other USB-powered electronics. This ensures maximum compatibility and optimal charging speed for most devices. High-Power PD 100W Fast Charging This 4S PD 100W -boost module supports high-speed power delivery for rapid charging and discharging of lithium battery packs. Designed for demanding DIY power projects, labs, and mobile requiring stable, efficient fast charging. 4S Lithium Battery Charge/Discharge Integration Specially designed for 4-series (4S) lithium battery packs, this module integrates both charging and discharging management in one board. It simplifies wiring, reduces external components, and offers consistent performance for power , backup power, and portable devices. Integrated Protection and Safety Features Designed with over-current, over-voltage, short-circuit and temperature protection (specific protection parameters depend on actual board version). These safety functions help protect your lithium batteries and connected load devices during both charge and discharge cycles. Stable Output for Power Supply Applications The -boost design provides a reliable DC power supply with constant voltage output, ideal for use as a laboratory power source, development board supply, or portable power module. It can step up or voltage as needed while maintaining high conversion efficiency.