ITEM NAME:18650 Protection Board 1a 1s 3.7V Over Discharge Over Current And Short Circuit Description: Module type: Micro usb input Lipo Battery Charging Board Charge mode: Linear charging Charge Current: 1A Charge precision: 1.5% Input voltage: 5V Full charged voltage: 4.2V Led indicator: Red is charging, Blue is full charged Input interface: mini USB Work temperature:-10℃~85℃ Inversed polarity: Can not reverse This module is used for single lithium charging, take power from USB charging port. Specification: Material: PCB Board Color: As Pictures Shown Size: Approx. 2.6x 1.7cm/ 1.02x 0.67inch Package Includes: 1 Piece USB Charging Module Note: The color may have different as the difference display, pls understand. Please allow 1-3mm error due to hand test. SKU: DMO0019399560011463.Module type: Micro usb input Lipo Battery Charging Board. Inversed polarity: Can not reverse. Specification: Material: PCB Board. This module is used for single lithium charging, take power from USB charging port.