Features: High-accuracy voltage detection circuit, fine workmanship and durable. Multiple Protections: Over-discharge protections, overcurrent protections, overcharge protections; Short circuit protections; High charge and discharge current; Compact size and lightweight. With equalizer. Increase battery life, safety and stability. Small in size and suitable for many applications requiring high integration and low cost. It can meet various performances requirements and ensure the absolute safety and reliability of the battery pack. Applications: Use for variety of capacities and various shapes 3.2V lithium batteries,Massager battery pack, light backup power supply, solar street light battery pack, monitor standby power supply, etc. Specifications: Size:Approx.4.8x5.5cm/1.89''x2.17'' Charging voltage:3.2V Continuous charging current: up to 30A Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Lithium Battery Protection Board