Bosch 1600A02E04 GXS18V-16N14 18V Battery and Charger Starter Kit - This 18V Starter Kit is the ideal solution to reducing downtime and increasing productivity for users tackling the most demanding and brutal applications. It includes an 8AH high power battery, which delivers 50% more runtime and over 75% more power than the CORE18V® 4AH battery, powering high-demand applications. The GBA18V80 features two layers of enhanced 21700 cells for greater battery efficiency. The battery has Bosch-exclusive CoolPack™ 2.0 technology, which cools the battery faster and helps provide longer lifetime compared to Bosch 18V batteries without CoolPack™ 2.0. Its cutting-edge battery design offers increased efficiency, and it weighs only 2.14 lbs.