18V Li-Ion Battery Protection Board BMS PCB for Power Tools
18V Li-Ion Battery Protection Board BMS PCB for Power Tools
18V Li-Ion Battery Protection Board with Equalizer Plate – BL1830 Compatible PCB for Power Tools
Upgrade or repair your 18V power tool battery packs with this high-performance Battery Protection Board (BMS PCB). Engineered for 5S lithium-ion and lithium polymer battery packs, this board delivers reliable overcharge and over-discharge protection, ensuring your battery system operates safely and lasts longer. Compatible with BL1830, 18650, and 21700 cell configurations, it's the ideal solution for DIY electronics enthusiasts and professional tool repair technicians alike.
Made in Mainland China.
Key Features
- Overcharge & Over-Discharge Protection: Designed specifically for 5S Li-ion and Li-polymer battery packs, this board safeguards your cells from damaging charge and discharge extremes, extending battery lifespan and improving overall safety.
- High-Current Management: Supports a maximum continuous discharge current of 60A and a charging current of 12A, optimizing power delivery and preventing damage from excessive current loads.
- Wide Temperature Range: Advanced temperature monitoring keeps the board operating safely between -20°C and +85°C, protecting against damage in demanding or extreme environments.
- User-Friendly Connectivity: Includes multiple connection ports (B+, B-, P+) for seamless integration with a wide range of devices. Built-in LED indicators provide real-time status feedback and alerts at a glance.
- Compact & Lightweight: Measuring just 100mm × 50mm and weighing approximately 22.5g, this board fits neatly into tight battery enclosures without adding unnecessary bulk.
- Equalizer Plate Included: The integrated cell balancing equalizer plate ensures uniform charge distribution across all cells, maximizing performance and cycle life.
Specifications
| Compatible Battery Type | 5S Li-ion / Li-polymer (18V) |
| Compatible Cell Format | 18650 / 21700 (BL1830 series) |
| Max Continuous Discharge Current | 60A |
| Charging Current | 12A |
| Operating Temperature | -20°C to +85°C |
| Dimensions | 100mm × 50mm |
| Weight | ~22.5g |
| Material | Metal / Plastic |
| Connection Ports | B+, B-, P+ |
| LED Indicators | Yes – real-time status & alerts |
Package Contents
- 1 × Battery Protection Board (PCB BMS with Equalizer Plate)
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Note: Monitor color calibration and ambient lighting may cause slight color variations from product images. Please allow ±2mm measurement tolerance for all listed dimensions.
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Frequently Asked Questions
Q: What battery packs is this 18V BMS protection board compatible with?
A: This battery protection board is designed for 5S lithium-ion and lithium polymer battery packs operating at 18V, including BL1830-style packs built with 18650 or 21700 cells. It is widely used for DIY power tool battery rebuilds and repairs.
Q: What protection features does this PCB board provide?
A: The board provides overcharge protection, over-discharge protection, overcurrent protection (up to 60A continuous discharge / 12A charge), and temperature safeguards across a -20°C to +85°C operating range. The equalizer plate also balances cell voltages to maximize battery efficiency and longevity.
Q: Is this board difficult to install for a DIY project?
A: The board features clearly labeled connection ports (B+, B-, P+) and onboard LED status indicators, making it straightforward for experienced DIY electronics enthusiasts to install. Basic soldering skills and familiarity with lithium battery handling are recommended for safe installation.
Q: What are the dimensions and weight of this protection board?
A: The board measures 100mm in length by 50mm in width and weighs approximately 22.5g, making it compact and lightweight enough to fit inside standard 18V power tool battery housings.
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.