Festool 578201 4x5.0 Ah Energy Set is the addition to your Festool Basic cordless tools, providing powerful and reliable battery packs for both the workshop and the job site. This energy set includes four 5.0 Ah battery packs, designed to deliver exceptional power and endurance for all 18 V Festool devices. Whether you are performing endurance work with tools like the Festool CTC MIDI, AGC 18, HKC 55, or tackling heavy drilling and driving tasks with the TPC 18, these batteries the versatility and strength you need. The set features a TCL 6 DUO Rapid Charger capable of charging two batteries simultaneously, saving you time and eliminating the need for multiple outlets. The charger supports all battery packs from the 10.8 V, 14.4 V, and 18 V classes (except BP-XS for CXS/TXS 10.8 V), making it a highly efficient solution for your charging needs. The Bluetooth® enabled battery packs automatically activate connected mobile dust extractors equipped with Bluetooth® receivers when the tool is switched on, enhancing convenience and safety on the job. All components are securely stored in a heavy-duty foam-lined Systainer³, which provides excellent protection, organization, and easy transport from the workshop to the job site. The Systainer³ is compatible with previous Systainer generations, mobile dust extractors, and many other system accessories, ing seamless integration into your existing setup. Festool also backs the DUO rapid charger and all battery packs with a comprehensive warranty for peace of mind. This energy set is an i choice for expanding your Festool cordless tool capabilities or adding extra battery power to keep your work moving smoothly. Model Number: 578201