General description Dual lithium battery charge management TP5100 4.2V 8.4V lithium charging board designed for efficient charging of lithium batteries. This module is equipped with multiple protection features to ensure safe operation. Technical specifications Input voltage: 5-18V DC (recommended 5-12V) Programmable charging current: 0.1A-2A Precharge current range: 10%-100% Color: Green Material: Plastic Package Contents: 24 x TP5100 Battery Charger Protection Module Measurement allowed error: +/- 1-3 cm Usage This TP5100 charging management power supply module is suitable for a variety of applications including portable devices, chargers, smartphones, tablets, power tools, and walkie-talkies. It features red and green LED indicators to show charging status.