4S 12.8V LiFePO4 BMS 130A Battery Protection Board + Switch

4S 12.8V LiFePO4 BMS — 130A Battery Management & Protection Board with Switch

Keep your car, RV, or inverter battery system running safely and efficiently with this robust 4S 12.8V LiFePO4 Battery Management System (BMS). Engineered for lithium iron phosphate (LFP) battery packs, this PCB-based protection board monitors and manages charge and discharge cycles to maximize battery longevity and system stability.

Key Features

• Designed for 4S LiFePO4 Packs: Optimized for 12.8V lithium iron phosphate battery configurations used in cars, RVs, inverters, and off-grid setups.
• 130A Rated Current: Handles high-current loads (available in 100A / 130A / 200A / 260A / 300A / 390A variants) to support demanding applications.
• Overcharge & Over-Discharge Protection: Automatically cuts off charging or discharging when cell voltages go out of safe range, protecting your battery cells from damage.
• Overcurrent & Short-Circuit Protection: Instantly disconnects the circuit if current exceeds safe thresholds or a short circuit is detected.
• Built-In Switch: Convenient on/off switch integrated directly into the board for easy system control without additional hardware.
• Temperature Protection: Monitors thermal conditions to prevent operation in unsafe temperature ranges.
• Durable PCB Construction: High-quality printed circuit board materials ensure reliable performance in mobile and stationary environments.
• Wide Application: Ideal for car battery systems, RV house banks, solar storage, off-grid inverters, and DIY lithium battery builds.

Specifications

• Configuration: 4S (4-cell series)
• Nominal Voltage: 12.8V
• Chemistry: LiFePO4 (LFP)
• Rated Current (this listing): 130A
• Available Sizes: 100A / 130A / 200A / 260A / 300A / 390A
• Material: PCB
• Color: As shown
• Country of Origin: Made in China

Package Contents

• 1 × Battery Protection Board with Switch

Note: Only the above item is included. Light reflection and different displays may cause slight color differences. Measurement tolerance: ±1–3 cm.

Learn More About Battery Safety

For guidance on safe handling of lithium battery systems, visit the U.S. Consumer Product Safety Commission – Lithium Battery Safety.

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Frequently Asked Questions

Q: What battery type is this BMS compatible with?

A: This BMS protection board is specifically designed for 4S LiFePO4 (lithium iron phosphate) battery packs with a nominal voltage of 12.8V. It is not intended for other lithium chemistries such as Li-ion or LiPo without verification of compatibility.

Q: What does the 130A rating mean for my system?

A: The 130A rating refers to the maximum continuous charge and discharge current the board can safely handle. For most car and RV inverter applications drawing up to 130A, this board is well-suited. Higher-load systems may require the 200A, 260A, or 300A variants.

Q: What protections does this BMS board provide?

A: This BMS provides overcharge protection, over-discharge protection, overcurrent protection, and short-circuit protection. It also includes temperature monitoring to keep your 4S LiFePO4 battery pack operating within safe parameters, extending overall battery life.

Q: Is the built-in switch necessary to operate the board?

A: The integrated switch allows you to manually enable or disable the battery circuit without needing additional external components. It simplifies installation and gives you direct control over your battery system, making it especially convenient for RV and off-grid setups.