This 2 Pack features two Bosch CORE18V® 6 Ah High Power Batteries, which each deliver 50% more runtime and over 75% more power than the CORE18V® 4 Ah battery, powering high-demand applications. The GBA18V60 features two layers of enhanced 21700 cells for greater battery efficiency. The battery has Bosch-exclusive CoolPackTM 2.0 Technology, which cools the battery faster and helps provide longer lifetime compared Bosch 18V batteries without CoolPackTM 2.0. With its cutting-edge battery design ? including copper end plates, power rails and a flexible circuit board ? it offers reduced resistance and increased efficiency. It weighs only 2.14 Lbs., for the ideal balance of size, weight and power. It includes a charge-status Indicator with high resolution for clear visibility. This battery is engineered for 18V, and it's compatible with Bosch 18V tools. The GBA18V60 is optimized to drive Bosch PROFACTORTM tools with BITURBO BrushlessTM Technology, for power comparable to the most demanding corded tools. The battery is compatible with Bosch 18V chargers and the AMPShareTM System. The AMPShareTM System is a battery system designed to be multi-brand compatible across many cordless products to make managing your work day easier.