The Bosch GBA 18 V 2.0 Ah M-B Professional is a lightweight 18 Volt compact battery with 2.0Ah and CoolPack technology. The CoolPack technology means that the batteries life time could be up to 100% longer than a battery without CoolPack. It is lightweight for even more comfortable work, especially in overhead applications. The Bosch flexible power system means that the battery is suitable for all tools in one Voltage class. This battery is extremely tough, even surviving a 3m drop onto concrete.