Neatly organized: Packaged in a Systainer with enough space for four battery packs and two chargers or one dual charger. Customizable: Easily assemble the perfect power supply according to your needs or application. Super flexible: Whether it's the large battery packs (6.2 Ah/5.0 Ah) or the smaller, compact 4.0 Ah or 3.0 Ah battery packs - the clever insert offers flexibility for battery packs and chargers (TCL 6 and SCA 8 as well as TCL 6 DUO). Portable: Packaged in the Systainer, the energy Systainer can be perfectly integrated into vehicle setups for easy transport from the workshop to the construction site. Better in the system: Systainers are compatible and can be coupled with all previous Systainer generations, mobile dust extractors, and many other system accessories. The Systainer provides space for up to four battery packs and two chargers or one dual charger - just as you choose. The clever insert securely holds all Festool 18V battery packs (except the Ergo battery pack) and chargers. This way, you can customize the ideal selection of power for operating your cordless tools. Everything you need for the workshop or construction site is at your fingertips. Neatly packaged in the Systainer.