The Festool 578946 SYS 18V 4xTBX4/TCL6 DUO Energy Set is a complete cordless power solution designed to expand your Festool 18V system and keep your tools running with minimal downtime. Featuring four advanced BP 18 TBX 4.0 Ah tabless batteries, a TCL 6 DUO rapid charger, and a protective SYS3 M 187 Systainer, this set is ideal for professionals who need dependable power for busy jobsites, mobile setups, and workshop applications.
Built with Festool’s latest tabless battery technology, the TBX 4.0 Ah batteries deliver strong, consistent output in a compact and lightweight design. Improved energy flow and reduced internal resistance help provide maximum power under load while reducing heat buildup, supporting longer battery service life and sustained performance over time.
The included TCL 6 DUO rapid charger charges two battery packs simultaneously, helping reduce downtime and eliminate the need for multiple chargers or outlets. This makes the Energy Set especially useful for crews running several cordless tools throughout the day.
Bluetooth® battery functionality adds smart system integration, allowing compatible batteries to automatically start a paired Festool CLEANTEC dust extractor when the cordless tool is switched on. When used with the Festool app, users can also access detailed battery information such as charge level, temperature, and charge cycle data.
Everything is neatly stored and protected in the included SYS3 M 187 Systainer, making transport, organization, and integration with the Festool Systainer system simple. Fully backed by Festool Service, this Energy Set delivers efficient power management, faster workflows, and long-term cordless confidence.
Features
Complete Professional Energy Set – Includes four 5.0 Ah Li-HighPower batteries, TCL 6 DUO rapid charger, and SYS3 Systainer
Four 5.0 Ah HighPower Battery Packs – Provides extended runtime for multiple cordless tools throughout the workday
Advanced Li-HighPower Cell Technology – Delivers strong, consistent performance for demanding applications
Up to 50% More Power – Optimized for Festool’s latest generation of saws and the HLC 82 cordless planer
High-Current Resistant Battery Cells – Engineered for dependable everyday professional use
Extended Battery Service Life – Designed to maintain reliable performance over years of operation
TCL 6 DUO Rapid Charger Included – Charges two battery packs simultaneously for maximum productivity
Dual-Battery Fast Charging – Reduces downtime and keeps cordless tools ready for work
Broad Charger Compatibility – Supports most Festool lithium-ion batteries from 10.8V to 18V
Integrated Bluetooth® Connectivity – Enables intelligent cordless system integration
Automatic Dust Extractor Activation – Starts compatible Festool CLEANTEC dust extractors automatically
Festool App Compatibility – Monitor battery charge level, temperature, and charge cycle history
SYS3 Systainer Included – Keeps batteries and charger protected, organized, and easy to transport
Fully Compatible with the Festool Systainer System – Integrates seamlessly into existing storage and transport solutions
Ideal for Expanding Festool Cordless Systems – Excellent solution for high-demand workshop and jobsite applications
Backed by Festool Service – Supported by Festool’s comprehensive warranty and professional service program
Professional-Grade Cordless Power Solution – Built for maximum reliability, efficiency, and long-term productivity
