DeWalt-Compatible 18V/21V 10x18650 Battery Case + PCB Kit (No Cells)

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.