Black & Decker Platinum BDH2000SDL 20-Volt Max Lithium Ion Slide Vac+Drill Combo Kit Powerful 20V max lithium ion battery technology, holds charge when unplugged for up to 18 months Removable battery, 20-Volt max lithium ion battery pack offers extended run time By providing an extra level of control, the 11-position clutch prevents stripping and overdriving screws 20% more suction power that lasts 2X longer (Compared to NiCd SPV1800 unit) LED charge indicator shows when battery is fully charged