Written by 
Introducing the BMS 1S‑2S‑3S‑4S‑5S 10A‑25A Battery Protection Circuit Board – the ultimate safety and performance solution for your 18650 Li‑ion and Li‑Po packs. Designed as a compact PCB/PCM module, this BMS (Battery Management System) delivers precise over‑charge, over‑discharge, over‑current, and short‑circuit protection while maximizing capacity and lifespan of your lithium batteries.
Why Choose This BMS?
- Supports 1‑5 series cells (1S‑5S) for versatile pack configurations.
- Two current ratings available: 10 A for low‑draw applications and 25 A for high‑drain devices.
- Built‑in balance function equalizes cell voltages for longer battery life.
- Ultra‑compact PCB design fits tight spaces in drones, RC cars, flashlights, power tools, and more.
- High‑precision MOSFETs and temperature sensor ensure reliable operation under extreme conditions.
- Easy solder‑on terminals and clear polarity markings simplify installation.
Key Highlights
- Universal Compatibility: Works with all standard 18650, 26650, 16340, and custom Li‑ion/Li‑Po cells.
- Advanced Protection: Over‑charge (≤4.25 V), over‑discharge (≥2.5 V), over‑current (≤10 A / ≤25 A), short‑circuit, and temperature cut‑off.
- Balanced Charging: Automatic cell balancing during charge to keep each cell within safe voltage limits.
- Low Self‑Discharge: Optimized circuit reduces idle current to < 30 µA, preserving pack capacity.
- Robust Build: High‑temperature FR‑4 board, gold‑plated pads, and waterproof coating for durability.
- LED Indicators: Power, charging, and fault status displayed via built‑in LEDs for instant diagnostics.
Technical Specifications
- Cell Configuration: 1S / 2S / 3S / 4S / 5S
- Current Rating: 10 A (standard) or 25 A (high‑drain)
- Operating Voltage: 2.5 V – 4.25 V per cell
- Protection Thresholds: Over‑charge 4.25 V, Over‑discharge 2.5 V, Over‑current 10 A / 25 A
- Temperature Range: -20 °C – +85 °C
- Dimensions: 45 mm × 30 mm × 5 mm (approx.)
- Weight: 12 g
- Connector Type: Solder pads (standard 2 mm pitch) with optional XT60/Deans plug adapters
Compatibility & Applications
This BMS is perfect for:
- DIY drone and quadcopter power systems
- RC cars, boats, and hobbyist robotics
- Portable flashlights, headlamps, and camping gear
- Electric scooters and e‑bikes (low‑to‑mid power)
- Power tools, battery packs, and custom electronics projects
Installation & Usage
Installation is straightforward – simply solder the positive and negative leads of each cell to the corresponding pads, observe the polarity markings, and secure the board with heat‑shrink tubing or a protective case. Once connected, the BMS will automatically monitor and protect the pack, while the LED indicators provide real‑time status updates.
Safety & Warranty
Our BMS modules are rigorously tested to meet CE, RoHS, and UL standards. Each unit comes with a 12‑month limited warranty and dedicated technical support to ensure your project runs safely and efficiently.
Boost Your Battery Performance Today
Upgrade to the BMS 1S‑2S‑3S‑4S‑5S 10A‑25A Lithium Battery Protection Circuit Board and experience unmatched safety, balanced charging, and reliable power delivery for all your Li‑ion and Li‑Po applications. Click Add to Cart now and protect your investment with the industry’s most trusted BMS solution.
Price: Original price was: $ 4.89.$ 1.61Current price is: $ 1.61.