4S 20A Li-Ion Battery Charger Module BMS Protection PCB Board

BMS stands for the battery management system. This is a BMS with 20A current and 14.8V voltage rating to charge 4 cells of Li-ion cell. The module comes with overcharge protection, over-discharge protection, overcurrent protection, and short circuit protection.

Features

• High-accuracy voltage detection circuit
• Terminal of the charger using high voltage device
• Built-in three-stage over-current detection circuit
• Can control the battery charge and over-discharge 
• Low standby current consumption
• Small size
• Simple writing, circuit connection, and installation 

Specification

• Overcharge voltage range: 4.25V-4.35V±0.05V
• Over discharge voltage range: 2.3V-3.0V±0.05V
• Charging voltage: 16.8V to 17V
• Upper limit working current: 10A
• Upper limit instantaneous current: 20A
• Quiescent current: <30µA
• Internal resistance: 45mΩ
• Operating temperature range: -50℃ to +50V
• Storage temperature range: -50℃ to +80℃

Application

• Battery pack
• Consumer electronics product 12V voltage rating
• Power supply
• Power bank and charger