Fein Ampshare CORE 18V 4.0 Ah Battery Pack 742324-5 Lightweight Design for Increased Balance:

Lightweight Design for Increased Balance: 20% Lighter than it's previous model

Removable top section allows for up-close sanding to abutting surfaces such as inside edges

Overall Length (L): 2-1/16"

Laser-cut vibration dampening slots minimize heat

Fein Ampshare CORE 18V 4.0 Ah Battery Pack 742324-5 Lightweight Design for Increased Balance:CORE18 V Li ion storage battery with Highpower cells, charge indicator and electronic cell protection (ECP). ECP protects storage batteries against overloading, overheating and deep discharge. COOLPACK 2. 0 technology ensures a storage battery service life that is 135 % longer in comparison to storage batteries without COOLPACK technology. It makes longer operation times possible. Compatible with all 18 V cordless devices with AMPShare or Bosch