LiFePO4 4S BMS Protection Board | Active Balancing 25A

LiFePO4 4-Series BMS Protection Board with Active Balancing

Keep your 4-cell LiFePO4 battery pack running safely and efficiently with this robust Battery Management System (BMS) protection board. Featuring built-in active balancing, aluminum substrate construction, and comprehensive safety protections, this board is an essential component for DIY energy storage systems, solar setups, e-bikes, and other applications that rely on dependable lithium iron phosphate battery packs.

Made in Mainland China.

Key Features

• Advanced Overcharge & Over-Discharge Protection: Precisely set thresholds at 3.65V (overcharge) and 2.35V (over-discharge) per cell to safeguard your battery pack from damage and extend its service life.
• Active Cell Balancing (~1A): The integrated active balancing circuit continuously equalizes charge across all four cells, promoting consistent capacity, improved efficiency, and longer overall battery pack lifespan.
• Overcurrent & Short-Circuit Protection: Automatically cuts off current in the event of a short circuit or excessive discharge load, protecting both your battery and connected devices.
• Temperature Protection: Built-in thermal monitoring guards against operation under unsafe temperature conditions.
• High Continuous Discharge Rate: Supports up to 25A continuous discharge current, making it well-suited for demanding energy applications.
• Aluminum Substrate Construction: The solid aluminum base provides structural integrity and effective heat dissipation for reliable long-term performance.

Specifications

Package Contents

• 1 × LiFePO4 4S BMS Protection Board with Active Balancing

Related Products You May Like

• Ancient Nutrition Multi Collagen Advanced Muscle 60 Capsules
• B&U Sinking Minnow Lure 29mm 2.8g – Bass Pike Trout Wobbler

Learn more: ENERGY STAR product efficiency guidance

Frequently Asked Questions

Q: What battery chemistry is this BMS protection board compatible with?

A: This board is specifically designed for LiFePO4 (Lithium Iron Phosphate) battery cells in a 4-series (4S) configuration. It is not intended for use with other lithium chemistries such as Li-ion (NMC/NCA) or LiPo cells, as the voltage thresholds are calibrated specifically for LiFePO4.

Q: What does active balancing do and why is it better than passive balancing?

A: Active balancing transfers excess charge energy from higher-charged cells to lower-charged cells, rather than simply dissipating it as heat (as passive balancing does). With approximately 1A of balancing current, this board helps ensure all four cells maintain equal state-of-charge, which maximizes usable capacity, reduces cell stress, and extends the overall life of your battery pack.

Q: What is the maximum continuous discharge current this board supports?

A: This BMS protection board supports up to 25A of continuous discharge current, making it suitable for a wide range of applications including solar energy storage, electric bikes, and portable power stations.

Q: Does this board include a battery?

A: No, the battery is not included. The package contains only the 4S LiFePO4 BMS protection board. You will need to source your LiFePO4 cells separately.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.