The unique Bosch Electronic Cell Protection (ECP) protects the lithium-ion battery, ensuring a 4 times longer lifetime:

This special electronic component offers the following:

• Protection against overload:
  The tool is shut down if the battery pack is put under excessive load.
• Protection against overheating:
  The electronics intervene and shut down the tool before the battery heats up excessively.
• Protection against deep discharge:
  The Bosch Electronic Cell Protection (ECP) ensures that the battery is not deeply discharged, therefore protecting it against irreparable damage.