3S / 4S / 5S 100A LiFePO4 BMS Protection Board with Cell Balancing

Product Description

Protect and manage compatible LiFePO4 battery packs with this 3S / 4S / 5S Battery Management System (BMS) protection board.

Designed for multi-cell lithium iron phosphate battery pack projects, this BMS is intended to provide battery protection and cell-balancing functionality when configured for the correct series count and battery chemistry.

The board is listed as a 100A BMS. However, the actual continuous discharge current, charging current, and supported battery configuration must be confirmed for the exact supplied model before installation.

Key Features

• 3S / 4S / 5S Configurations: Intended for compatible 3-cell, 4-cell or 5-cell series battery packs. Confirm whether the supplied version supports all three configurations.

• LiFePO4 Battery Chemistry: Designed for lithium iron phosphate cells when the correct LiFePO4 version and voltage settings are supplied.

• Battery Protection: Protection functions may include overcharge, over-discharge, overcurrent and short-circuit protection. Confirm the exact functions of the supplied board.

• Cell Balancing: Balance functionality is advertised for this product category. Confirm balancing current and operating conditions with the supplier.

• High-Current BMS Category: Marketed as a 100A board. Verify the continuous discharge rating, charging current and thermal requirements before use.

• Multi-Cell Battery Pack Management: Intended for compatible battery pack assemblies using cells connected in series.

• DIY and Battery Projects: Suitable for compatible battery storage, electronics and custom battery-pack applications when properly configured.

Technical Specifications

Typical Applications

• LiFePO4 battery pack projects

• Compatible solar energy storage systems

• DIY battery assemblies

• Portable and backup power projects

• Compatible electric mobility battery projects

• Electronics and battery research projects

Application suitability depends on the exact BMS current rating, pack configuration, cell specifications, wiring and thermal design.

Important Compatibility & Safety Notes

• Use only with the correct LiFePO4 BMS version.

• Confirm whether the board is configured for 3S, 4S or 5S before connecting cells.

• Use a charger designed for the selected LiFePO4 pack voltage.

• Do not use Li-ion 4.2V-per-cell charging settings for LiFePO4 cells.

• Confirm the actual charging current and continuous discharge current.

• Verify the balance connector pinout and battery terminal connections before installation.

• Provide appropriate wiring, insulation and heat dissipation for the intended current.

• Do not assume that the advertised 100A rating means 100A continuous charging or discharging.

• Incorrect battery connections can cause serious damage, overheating or fire.

Package Includes

• 1 × 3S / 4S / 5S LiFePO4 BMS protection board — exact configuration subject to supplier confirmation

• Balance cable / wiring accessories — confirm actual package

Important: The 100A headline, supported series configurations, balance current, protection thresholds and charging current must be verified for the exact supplied board. Do not connect the board until the battery chemistry and wiring diagram have been confirmed.