25A 12V BMS Battery Protection Circuit Board with Balancing
25A 12V BMS Battery Protection Circuit Board with Balancing
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 BMS (Battery Management System) Protection Circuit Board. Designed for DIY battery packs and portable power systems, this compact PCB board delivers accurate voltage detection, built-in cell balancing, and multi-stage over-current protection — all in a slim, durable form factor.
Key Features
- High-Accuracy Voltage Detection: Precisely monitors cell voltage to prevent overcharge and over-discharge conditions.
- High-Voltage Charger Terminal: Charger input uses high-voltage-rated components for durability and safety.
- Three-Stage Over-Current Protection: Detects over-current Level 1, over-current Level 2, and load short-circuit conditions automatically.
- MOS Transistor Control: Independently controls both charge and discharge paths for optimized battery performance.
- Low Standby Current: Ultra-low standby draw of just 50µA, minimizing parasitic drain when the system is idle.
- Short-Circuit Protection: Board is protectable on short-circuit events; reconnecting the charger restores normal operation.
- Long Service Life: Rated for more than 30,000 hours of operational life.
Technical Specifications
| Max Working Current | 25A |
| Max Peak Current | 35–40A |
| Over-Charge 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 |
| Life Cycle | > 30,000 hours |
| Board Dimensions | 56 × 45 × 4.0 mm |
What's in the Box
- 1 × 25A 12V BMS Battery Protection Circuit Board
Made in Mainland China.
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Note: Colors may vary slightly due to monitor settings. Please allow ±1–3 cm measurement tolerance due to manual measurement.
Learn more: ENERGY STAR product efficiency guidance
Frequently Asked Questions
Q: What type of batteries is this 25A 12V BMS protection board compatible with?
A: This BMS protection circuit board is designed for use with lithium-ion (Li-ion) and lithium polymer (LiPo) battery cells. It is commonly used in DIY 12V battery pack assemblies, e-bikes, power tools, and portable power stations where over-charge, over-discharge, and short-circuit protection are needed.
Q: What happens when a short circuit is detected?
A: When a load short-circuit event is detected, the BMS board automatically cuts off the discharge path to protect the battery cells. Normal operation is restored by reconnecting the charger — no manual reset component is required.
Q: Can this board handle both charging and discharging control?
A: Yes. The onboard MOS transistor controls both the charge and discharge paths independently, giving you reliable, dual-path management of your battery pack from a single compact board.