1S 3A 3.7V Li-Ion Battery Protection Board

Features:

• Single-Cell Protection: Designed for one lithium-ion or lithium-polymer cell with a nominal voltage of 3.7V.

• 3A Rated Current: Supports a stated maximum operating current of up to 3A, subject to the board's thermal and electrical limits.

• Overcharge Protection: Disconnects or limits charging when the battery voltage exceeds the circuit's specified protection threshold.

• Over-Discharge Protection: Helps prevent the battery from being discharged below its safe voltage limit.

• Overcurrent Protection: Helps protect the battery and connected circuit when the current exceeds the board's specified limit.

• Short-Circuit Protection: Helps interrupt the output during a detected short circuit.

• Compact PCB Design: Easily integrates into small rechargeable battery-powered devices.

• Rechargeable Battery Support: Suitable for compatible single-cell lithium-ion and lithium-polymer battery packs.

• Low Standby Consumption: Designed to minimize battery drain when the connected device is inactive.

Specifications:

• Product Type: Battery Management System (BMS) / protection board

• Battery Configuration: 1S (one cell)

• Compatible Battery Chemistry: Standard lithium-ion or lithium-polymer

• Nominal Battery Voltage: 3.7V

• Full-Charge Voltage: 4.2V

• Rated Maximum Current: 3A, as specified in the product title

• Overcharge Protection: Supported; exact threshold depends on the protection IC

• Over-Discharge Protection: Supported; exact cutoff voltage depends on the protection IC

• Overcurrent Protection: Supported; exact trip current must be verified

• Short-Circuit Protection: Supported on compatible board versions

• Cell Balancing: Not required for a single-cell pack

• Connection Terminals: Typically B+ and B− for the battery, and P+ and P− for the load/charger; verify the supplied board's labels

• PCB Dimensions: Not specified

• Package Contents: 1 × 1S 3A Li-ion battery protection board

Applications:

• Single-cell 18650 battery packs

• Rechargeable lithium-polymer battery projects

• Portable electronic devices

• Battery-powered sensors

• Small IoT and embedded systems

• Rechargeable LED lighting

• DIY electronics and prototyping

• Low-power control circuits

• Compact battery-powered instruments

• Electronic repair and replacement projects