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 8 Ah High Power Battery, which delivers 50% more runtime and over 75% more power than the CORE18V 4 Ah 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. This battery is compatible with Bosch 18V tools and optimized to drive Bosch PROFACTOR tools with BITURBO Brushless Technology. It's compatible with Bosch 18V chargers and the AMPShare System. The Bosch BC1880 18V Fast Battery Charger delivers at least 40% faster charging than Bosch standard 18V Chargers with CORE18V 6 Ah battery. It gets users power ready faster with dual-mode charging. The 8-Amp charging current delivers 4x the charging current vs. the GAL18V-20 standard charger. It features regulated dual-mode charge � the first 80% of the charging is very fast, while the remaining 20% is in long-life mode.