Key Features
Four 5.0Ah PacksKeeps more Festool 18V tools ready to run without waiting on a single battery. That matters when you are moving between tools or working through a full day in the shop or on site. Dual Rapid ChargingThe included TCL 6 DUO rapid charger charges two battery packs at the same time, so you spend less time rotating packs and more time working. Festool Battery Set StorageThe Systainer3 keeps the charger and all four batteries together in one organized case. It is easier to store, easier to transport, and easier to keep your cordless setup together.
Overview
The Festool 578201 Limited Edition 18V 5.0Ah Battery 4-Pack w/ TCL 6 DUO Charger Energy Systainer Set is a cordless battery and charger kit built for Festool 18V tools. This is a battery set designed for keeping cordless tools powered on the jobsite, in the shop, or in a service vehicle. Model Number 578201. If you already run Festool cordless tools, this set is about reducing downtime by giving you four 5.0Ah lithium-ion battery packs, a dual-bay rapid charger, and one organized storage system.
The big selling point here is not just battery capacity. It is workflow. Instead of juggling one or two packs across several tools, you get a four-pack setup with a charger that can charge two batteries at exactly the same time. That makes a real difference for installers, trim crews, cabinet shops, and punch-list work where tools are in constant rotation and dead batteries cost time.
Festool built this Energy Set around the same system thinking that shows up across the rest of its lineup. The TCL 6 DUO rapid charger works with Festool battery packs from 10.8V to 18V, with the listed exceptions for BP-XS used with CXS and TXS tools and the MXC charger platform. Packed inside the included Systainer3, the whole setup stays together instead of getting split between shelves, trucks, and gang boxes.
The battery packs include a fuel indicator, so you can check charge status without guessing. Festool also notes smart Bluetooth functions that work with the Festool WorkApp for more detailed battery information such as charging status, temperature, and charging cycles, plus software updates. For users already invested in the Festool cordless platform, that gives you more visibility into battery condition than a basic pack with a simple light bar.
From a jobsite practicality standpoint, the Systainer3 matters more than it sounds on paper. It gives you a dedicated home for four batteries and the charger, and it is designed to integrate with previous Systainer generations and other Festool system accessories. If your van, shop, or trailer is already organized around Systainers, this drops right in instead of creating one more loose charger-and-battery pile.
This Festool battery pack set makes the most sense for users buying Basic cordless tools, anyone adding spare packs for a workshop or construction site, or crews who need more runtime and less waiting. If you only own one cordless tool and rarely use it, this is probably more system than you need. If you run multiple Festool 18V tools and want a clean, organized way to keep them powered, this is the kind of setup that saves aggravation every week.
Keep More Tools Ready
If you run several cordless tools in one day, extra batteries are not a luxury. They keep the work moving. This set is built for that exact problem.
- Includes four 18V 5.0Ah lithium-ion battery packs
- Fuel indicators let you check charge status before you grab a pack
Charge Two Packs at Once
The included TCL 6 DUO charger cuts down the usual battery shuffle. Two packs charge at the same time, which is exactly what you want when a crew is cycling through batteries all day.
- DUO rapid charger included
- Designed for Festool battery packs from 10.8V to 18V, with stated exceptions
Store It Like a System
The Systainer3 is not just packaging. It gives the whole battery and charger setup a permanent place, which makes transport, storage, and van organization a lot easier.
- Sized to hold four battery packs and the DUO charger
- Compatible with previous Systainer generations and many Festool system accessories
What’s in the Box
- (4) Festool BP 18 Li 5.0 ASI Battery Packs
- (1) Festool TCL 6 DUO Rapid Charger
- (1) Festool Systainer SYS3 M 187
Key Specifications
| Voltage (V) | 18 V |
|---|---|
| Battery Capacity (Ah) | 5.0 Ah |
| Battery Quantity | 4 |
| Battery Chemistry | Lithium-Ion |
| Charger Included | Yes |
| Charger Type | TCL 6 DUO Rapid Charger |
| Compatibility | Festool 18V devices |
| Weight (lbs) | 15.4 lbs |
Compatibility
Battery Platform Designed for Festool 18V devices and positioned as an ideal add-on for Festool Basic cordless tools. Charger Range The TCL 6 DUO rapid charger is suitable for Festool battery packs from 10.8V to 18V, except BP-XS for CXS and TXS tools and the MXC charger platform. Storage System The included Systainer3 is compatible with previous Systainer generations, mobile dust extractors, and many other Festool system accessories. App Functions Bluetooth battery functions work with the Festool WorkApp for charging status, operating data, and software update support.
Built For
ConstructionGeneral ContractingRemodelingCabinet InstallationFinish CarpentryWorkshop UseJobsite Battery RotationFestool Cordless Systems
Pro Tip
If you are running multiple Festool cordless tools, keep two packs on the charger and two in rotation. That setup takes the most advantage of the TCL 6 DUO charger and helps avoid the stop-and-start rhythm that happens when one charger is trying to feed a full day of work.
Warranty & Support
3 Years Comprehensive warranty coverage.
Tool Nut’s Take
Tool Nut’s Take
Festool 578201 Limited Edition 18V 5.0Ah Battery 4-Pack w/ TCL 6 DUO Charger Energy Systainer Set is a smart buy for heavy cordless users
If you are already in the Festool cordless system, this is the kind of battery set that makes the rest of your tools more useful every day.
- Who it’s for: Pros and serious users running multiple Festool 18V tools in the shop, truck, or on active jobsites.
- Why it stands out: Four 5.0Ah packs, a true dual rapid charger, and a Systainer3 mean you are buying runtime, charging efficiency, and organization all at once.
- Worth knowing: This is best for users already invested in Festool cordless tools. It is a system-expander, not a first step into cordless if you do not own compatible tools yet.
Common Questions
- Is this battery set compatible with Festool 18V tools? Yes. The set is listed as compatible with Festool 18V devices and is positioned as an ideal addition to Festool Basic cordless tools.
- Can the included charger charge two batteries at the same time? Yes. The TCL 6 DUO rapid charger is designed to charge two battery packs simultaneously.
- Does this set include a storage case? Yes. It comes with a Festool Systainer SYS3 M 187 for storage and transport.
- Does the battery pack support app-based battery information? Yes. Festool states the battery pack has Bluetooth functions that work with the Festool WorkApp for charging status and other operating data.
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