20V Li-Ion BMS Protection Board for Dewalt 18V/20V Battery
20V Li-Ion BMS Protection Board for Dewalt 18V/20V Battery
20V Li-Ion Battery Charging Protection Board for Dewalt 18V/20V Packs
Keep your Dewalt 18V/20V lithium-ion battery packs running safely and reliably with this high-quality BMS Charging Protection Board. Designed specifically for 21700-cell 5S Li-Ion battery configurations, this PCB board guards against overcharge, over-discharge, and short-circuit conditions — extending the working life of your rebuilt or repaired battery packs.
This is a professional-grade component intended for experienced battery assemblers and repair technicians who are familiar with Li-Ion cell chemistry and battery pack construction. It is not a plug-and-play consumer battery — it is a circuit board used in the assembly and repair process.
Made in Mainland China.
Key Features
- Compatible with: Dewalt 18V / 20V 21700 Li-Ion battery packs (5S configuration)
- Function: Overcharge protection, over-discharge protection, and short-circuit protection
- Type: CLI-HR21DWL-5S BMS protection circuit board
- Material: High-quality PCB construction for durability and reliable performance
- Dimensions: 13 × 7 cm (5.12 × 2.76 in) — compact design fits standard battery housings
- Condition: Brand new
- No battery, charger, or cells included — protection board only
What's in the Box?
- 1 × 20V Li-Ion Battery Charging Protection Board (BMS)
Who Is This For?
This BMS board is ideal for DIY battery pack builders, electronics repair technicians, and hobbyists who are experienced in working with Li-Ion cells and battery management systems. It is only suitable for those with practical experience in battery assembly and a solid understanding of lithium-ion battery safety requirements.
Related Products You May Need
- 1PC 10g High Grade Silicon Grease Lubricant – Great for sealing and protecting components
- 1PC 400cm Sealing Tape – Oil-Free, Leak-Proof for Workshop Use
- 3PCS Silicone Sealant Scraper Set – Multi-Functional Workshop Tools
Learn more: ENERGY STAR product efficiency guidance
Frequently Asked Questions
Q: Is this BMS protection board compatible with all Dewalt battery models?
A: This charging protection board (type CLI-HR21DWL-5S) is specifically designed for Dewalt 18V and 20V battery packs that use 21700 Li-Ion cells in a 5S configuration. Please verify your battery pack's cell type and configuration before purchasing to ensure compatibility.
Q: Does this product include batteries or a charger?
A: No. This listing is for the BMS charging protection circuit board only. No Li-Ion cells, battery pack housing, or charger is included. You will need to source the appropriate 21700 cells and hardware separately for your battery assembly project.
Q: Can a beginner install this BMS protection board?
A: This board is intended for users who are already experienced in Li-Ion battery assembly and repair. Working with lithium-ion cells requires knowledge of proper safety procedures. If you are new to battery assembly, we strongly recommend gaining hands-on experience or consulting a professional before attempting installation.
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.