25A 12V BMS Battery Protection Circuit Board with Balance
25A 12V BMS Battery Protection Circuit Board with Balance
25A 12V BMS Battery Protection Circuit Board with Cell Balancing
Keep your lithium battery pack running safely and efficiently with this high-quality 25A 12V Battery Management System (BMS) Protection Circuit Board. Engineered with precision, this PCM board features multi-stage protection circuitry to guard against overcharge, over-discharge, overcurrent, and short circuits — extending battery life and ensuring stable, reliable performance across a wide range of applications.
Made in Mainland China.
Key Features
- High-Accuracy Voltage Detection: Precision voltage monitoring circuit ensures cells stay within safe operating limits at all times.
- High-Voltage Charger Terminal: Charger interface utilizes robust high-voltage components for durability and compatibility.
- Three-Stage Overcurrent Detection: Built-in protection logic covers Overcurrent Level 1, Overcurrent Level 2, and load short-circuit events.
- MOS Transistor Charge/Discharge Control: MOSFET switching enables efficient, precise management of both charging and discharging cycles.
- Ultra-Low Standby Current: Only 50µA standby draw minimizes parasitic drain when idle.
- Short-Circuit Protection: Self-recoverable short-circuit protection — simply reconnect the charger to reset.
- Long Service Life: Rated for more than 30,000 hours of operation.
Technical Specifications
| Max Working Current | 25A |
| Max Peak Current | 35–40A |
| Overcharge Voltage | 4.25–4.35V ± 0.05V |
| Over-Discharge Voltage | 2.3–3.0V ± 0.05V |
| Standby Current | 50µA |
| Internal Resistance | <100mΩ |
| Working Temperature | -40°C to +50°C |
| Storage Temperature | -40°C to +80°C |
| Service Life | >30,000 hours |
| Board Dimensions | 56 × 45 × 4.0 mm |
What's in the Box
- 1 × Battery Protection Circuit Board (BMS PCM)
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Learn more: EPA guidance on lithium-ion battery handling
Frequently Asked Questions
Q: What type of battery is this BMS protection board compatible with?
A: This 25A 12V BMS protection circuit board is designed for use with lithium-ion (Li-ion) battery packs. It is suitable for 3-cell (3S) configurations operating at a nominal 12V, and is commonly used in DIY battery packs, e-bikes, power tools, and other portable power applications.
Q: What happens when a short circuit is detected?
A: The board automatically cuts off the circuit to protect both the battery and connected devices when a short circuit is detected. Protection is self-recoverable — simply reconnect the charger to restore normal operation without needing to replace any components.
Q: What is the difference between the Max Working Current (25A) and Max Current (35–40A)?
A: The Max Working Current of 25A is the continuous rated current the board can handle during normal operation. The Max Current of 35–40A refers to the short-duration peak current capacity before the overcurrent protection circuit triggers a cutoff, protecting your battery from damage during sudden load spikes.
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.