The Festool Energy Set SYS 18V 4×HP 5.0 / TCL 6 DUO (578682) provides a reliable, high-capacity power solution for professionals who require long runtime and efficient charging for their cordless tools.
Supplied in a durable Systainer³ storage case, the set includes four BP 18 Li 5.0 HP-ASI battery packs and a TCL 6 DUO rapid charger capable of charging two batteries at the same time.
This combination keeps 18V Festool tools powered and ready for continuous work on site or in the workshop.
The 5.0 Ah battery packs are designed as powerful all-purpose batteries suitable for a wide range of applications. Featuring Li-HighPower cell technology. They can deliver up to 50% more power when used with the latest generation of Festool saws, and the HLC 82 cordless planer compared with standard 5.0 Ah batteries.
The high-current-resistant cells offer excellent durability and extended service life, making them suitable for demanding professional use.
The TCL 6 DUO charger allows two batteries to charge simultaneously and supports voltage classes from 10.8 V to 18 V (excluding BP-XS batteries for CXS/TXS and the MXC charger). Bluetooth® functionality in the battery packs can automatically activate a compatible Festool CLEANTEC dust extractor when the cordless tool is switched on.
Through the Festool app, users can also access detailed information such as battery charge level, temperature, and charging cycles.
Both the DUO rapid charger and the included battery packs are covered by Festool Service, providing added reliability and protection.
This energy set is suitable for powering most Festool 18V cordless tools, with a focus on versatility across different applications (except ETSC 125, RTSC 400, DTSC 400, and CTC SYS).
It is an excellent choice for expanding Basic tool versions or for keeping additional batteries available in the workshop or on the jobsite.
The set includes four BP 18 Li 5.0 HP-ASI battery packs, one TCL 6 DUO rapid charger, and one Systainer SYS3 M 187 storage case.

