Festool - 578733 - Energy Set 18V 2xTBX4/TCL6

Product Highlights

High-output power.
Full power, low weight.
Backed by Festool Service.
The 18V Starter Energy Set delivers a ready-to-use power solution for Festool cordless tools. With two 4.0 Ah TBX Tabless Batteries and a TCL 6 rapid charger included, you have the power and charging performance needed to get to work immediately—whether you’re starting fresh or adding capacity to an existing system.
TBX 4 Compact battery packs deliver strong, consistent output in a lightweight design weighing just 1.3 lbs (600 g). Advanced tabless cell technology improves energy flow, reduces heat buildup, and enables longer runtimes with faster recharging—making these batteries ideal for continuous, demanding work without added fatigue.
Like all Festool batteries and chargers, the components in this starter set are fully covered by Festool Service, providing dependable support, long-term reliability, and peace of mind—so you can stay focused on the work, not the power supply.

Features and Benefits

Lightweight power for reduced fatigue: TBX 4 battery packs deliver full output in a compact, lightweight design—helping reduce fatigue during extended work without sacrificing performance.
Maximum power for demanding applications: Advanced tabless cell technology improves energy flow and reduces internal resistance, delivering strong, consistent power even under heavy load.
Extended battery service life: Lower heat generation places less stress on the cells, helping extend battery lifespan and maintain performance over time.
Faster recharge cycles: Reduced heat buildup allows batteries to be recharged immediately after use, minimizing downtime between tasks.
Automatic dust extraction start: Bluetooth®-enabled batteries automatically start a paired Festool CLEANTEC dust extractor when the cordless tool is switched on.
Smart battery management: When used with the Festool app, Bluetooth® functionality provides access to detailed battery data including charge level, temperature, and charge cycles.
Broad charger compatibility: The TCL 6 quick charger supports most Festool lithium-ion battery packs from 10.8 V to 18 V (excluding BP-XS for CXS/TXS and MXC chargers).
Backed by Festool Service: All batteries and chargers are fully covered by Festool Service for long-term reliability and peace of mind.

Product Details

Faster charging, less downtime: The TBX 4 Compact Battery delivers full output in a lightweight, well-balanced design. At just 1.3 lbs (600 g), it reduces fatigue during extended work without sacrificing performance.

Smart system features: Thanks to low heat generation from tabless cell technology, TBX batteries can be recharged immediately after use—no cooling phase required—so they’re ready to go again in a flash.

Compact power for demanding work: Bluetooth® connectivity automatically starts a paired Festool CLEANTEC dust extractor when the cordless tool is switched on. With the Festool app, users can view detailed battery information at any time, including charge level, temperature, and charge cycles.

Specifications

Weight 4.41 lbs (2.00 kg)
Capacity 4.0 Ah
Voltage 18.00 V
Charging current 6,0 A
Input voltage 120.00 V

Included in Delivery

2 x Tabless Battery BP 18 TBX 4 C-ASI, Rapid Charger TCL 6

Product Information

Manufacturer	Festool
SKU	578733
EAN / UPC	4014549464311
Quantity in Pack	1
Product Type	Accessory
Country of Origin	DE
Product Group	Battery and charging technology/Energy set/18V starter sets
Customs Tariff Number	850760

Packaging

Length: 12.4 in
Width: 9.84 in
Height: 3.54 in
Packaged weight: 5.335 lb
Package volume (calculated from dimensions): 431.94 cubic inches

Additional Manufacturer Details

Catalog description: Starter Kit 18V 2xTBX4/TCL6 US

Compatible Accessories (SKU References)

578745
201138
577155