Li-Ion battery with charge status indicator and �Electronic Cell Protection� (ECP). ECP protects against overload, overheating and total discharge. The COOLPACK 1.0 technology ensures a longer battery life compared with batteries without COOLPACK technology and therefore makes long operating periods possible. Compatible with all 18V cordless devices with AMPShare or Bosch Professional 18V battery interface. Featuring electronic coding for tools and chargers, high power contacts with silver coating, capacity indicator with 3 LEDs, red Cool Pack housing constructed of heat conductive material, in-built temperature sensor, large ergonomic release button for ease of use, robust housing and slide-in interface. Efficient Bosch Ampshate cooling technology in and around the battery prevents heat damage, gives up to 65 percent longer run-time and up to 100 percent longer lifetime. 5.0 Ah Lithium-Ion CoolPack batteries - only from Bosch Up to 65% longer run-time Up to 100% longer lifetime Flexible Power System 2-year Bosch Battery Warranty Premium Service