Battery pack 4x ProCORE18V 5.5Ah. The ProCORE18V 5.5Ah Professional is a powerful battery from the Bosch ProCORE18V series, delivering the power of a corded tool with up to 1,800 watts. Our latest cell technology with 21700 cells and intelligent battery management ensure 87% more power than a standard battery. The COOLPACK 2.0 technology of this battery provides excellent heat management for a longer lifespan and runtime. The ProCORE18V 5.5Ah features a high-resolution charge level indicator with 5 LEDs. All our batteries have been compatible with new and existing Bosch Professional tools within the same voltage class since 2008. The L-BOXX 136, with its specially designed robust insert, offers an improved storage and transport solution as part of the Bosch Mobility System. The optimized click mechanism of the L-BOXX allows for easy opening of stacked boxes for convenient handling. The comprehensive compatibility of the L-BOXX variants, tool inserts, and the Sortimo vehicle equipment system ensures absolute flexibility. ProCORE18V batteries with 5.5 Ah deliver up to 1,800 W of power and are perfect for utilizing the full performance of BITURBO tools. Included in the package: 4x ProCORE 18V 5.5Ah battery, L-BOXX 136, 1/1 L-BOXX insert for starter sets.