For battery cells, review the product description for real-world current recommendations, testing notes, and application guidance. Manufacturer maximum ratings should be treated as limits, not the best target for long-term pack health.
Description
Build a replacement 10-cell 18650 power-tool battery pack using a DeWalt-compatible 18V/21V case and electronics kit. This is a component kit for experienced battery builders. It is not an assembled battery and does not include battery cells.
Included components
- Yellow-and-black DeWalt-compatible battery case assembly
- 10-cell 18650 holder
- Main 4-MOS PCB shown in the product photos
- Separate LED power-display board shown in the product photos
- Contact hardware and assembly pieces shown in the main product photo
Verified configuration
| Cell format | 10 x 18650 lithium-ion cells |
|---|---|
| Supplier-listed voltage | 18V nominal / 21V maximum |
| Product type | DIY replacement case and electronics kit |
| Cells included | No |
| Assembly required | Yes |
Compatibility notice
Confirm the case interface, terminal geometry, PCB wiring, charger, and tool compatibility with your exact model before assembly. Power-tool platforms can vary by generation and region. No PCB current rating is advertised because supporting manufacturer documentation was not supplied.
Battery-building safety
Use only matched, tested cells and a correctly engineered pack layout. Apply proper cell insulation, series and parallel connections, conductor sizing, fusing or over-current protection, temperature monitoring, and mechanical support. Spot-weld cell connections using suitable equipment; do not solder directly to bare lithium-ion cells. Verify polarity and every connection before charging or installing the pack.
Unprotected lithium-ion cells can cause fire, injury, or property damage if assembled, charged, or used incorrectly. This kit is intended for experienced builders.
DeWalt is a trademark of its respective owner. This is a third-party compatible component kit. DIY500AMP.COM is not affiliated with or endorsed by DeWalt.
Orders ship from Florida when inventory is available. Lithium-ion cells require proper handling, protected packs, correct chargers, and safe storage. Do not solder directly to battery terminals.
Payment and Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
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Wow, these cells are great!
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