Key Features
Four 5.0Ah PacksKeeps multiple tools in rotation without waiting on a single battery. That matters when you’re running all day and do not want charging downtime slowing the job. Dual-Bay ChargingThe included TCL 6 DUO charger handles two batteries at once, so you can cycle packs faster and keep your Festool cordless setup ready for the next task. Organized Energy SetThis Festool battery charger set stores the batteries and charger in a Systainer, which makes it easier to keep your charging kit protected, stacked, and ready for the van or shop.
Overview
The Festool 578201 Limited Edition 18V 5.0Ah Battery 4-Pack w/ TCL 6 DUO Charger Energy Systainer Set is a cordless power system bundle built for users who already rely on Festool 18V tools and need more runtime on hand. This is a battery and charger set designed for powering Festool 18V cordless tools across workshop and jobsite use. Model Number 578201. If your biggest problem is losing time while waiting for packs to charge, this set gives you four 5.0Ah batteries plus a dual-bay charger so you can keep work moving.
What makes this set matter is not just the number of batteries, but how it changes workflow. Four 18V 5.0Ah packs let you dedicate batteries across multiple tools or keep charged spares ready for long stretches of sanding, cutting, drilling, or fastening. The included TCL 6 DUO charger charges two batteries at once, which is the practical part of the package. Instead of one battery coming off the charger while the rest sit dead, you can keep a two-in, two-out rotation going.
Festool positions this energy set for all applications and most 18-volt devices, with a focus on power and endurance. In plain terms, this is the setup for users who want solid runtime and do not want to build a cordless kit one battery at a time. It is a strong fit as an add-on for Festool Basic cordless tools, and it also makes sense as a shop backup set when your regular batteries are spread across different tools, crews, or service vehicles.
The Systainer matters more than it might seem on paper. Batteries and chargers tend to end up loose in a gang box, on a shelf, or rattling around in the truck. Having the full charging setup stored in a dedicated Festool Systainer keeps the batteries, charger, and transport more organized. For crews already using the Festool storage system, that means this set stacks with the rest of your gear instead of becoming one more loose pile of accessories.
Compatibility is straightforward but important. This set is intended for most Festool 18V tools, but it is specifically noted as not compatible with the Festool ETSC 125, RTSC 400, DTSC 400, and CTC SYS dust extractor. That is the kind of detail worth knowing before you buy, especially if one of those compact cordless sanding or extraction tools is the main reason you are shopping for more batteries.
Who should buy it? Contractors, cabinet installers, finish carpenters, service techs, and serious DIY users already on the Festool 18V platform will get the most from it. If you only need one spare battery, this is more than you need. If you run several cordless tools in a day and want fewer interruptions, better charging flow, and cleaner storage, this Festool energy set makes a lot of sense.
Keep Your Cordless Setup Ready
This set is built for one simple goal: less waiting and better battery management. When you have multiple 18V packs charged, stored, and ready in one system, the whole cordless side of the job gets smoother.
- Includes four 18V 5.0Ah battery packs for extended runtime and multi-tool rotation
- Includes the Festool TCL 6 DUO charger so two batteries can be charged at the same time
- Comes packed in a Festool Systainer for organized storage and transport
What’s in the Box
- (4) Festool 18V 5.0Ah battery packs
- (1) Festool TCL 6 DUO charger
- (1) Festool Systainer storage case
Key Specifications
| Voltage (V) | 18 V |
|---|---|
| Battery Capacity (Ah) | 5.0 Ah each |
| Battery Quantity | 4 Pack |
| Charger Model | TCL 6 DUO |
| Power Source | Rechargeable battery system |
| Storage | Systainer case included |
| Product Type | Battery and charger set |
| Weight (lbs) | 15.3 lb |
Compatibility
Battery Platform Built for Festool 18V cordless tools and intended for most applications on the Festool 18V platform. Charging System Includes the Festool TCL 6 DUO charger for charging two compatible Festool battery packs at the same time. Not Compatible With Not compatible with the Festool ETSC 125, RTSC 400, DTSC 400, and CTC SYS dust extractor.
Built For
Festool 18V Cordless SystemsWorkshop Backup PowerJobsite Battery RotationCarpentryRemodelingCabinet InstallationGeneral ContractingSerious DIY / Hobbyist
Pro Tip
If you run more than one Festool cordless tool in a day, keep two batteries on the TCL 6 DUO charger and two in service. That way the set works like a rotation system instead of just a pile of spare packs.
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 Makes Sense for Real Cordless Users
This is the kind of set you buy when one extra battery is not solving the problem anymore.
- Who it’s for: Festool users running multiple 18V cordless tools in the shop or on the job and wanting less charging downtime.
- Why it stands out: Four 5.0Ah packs plus a dual charger is a practical combo, and the Systainer keeps the whole setup organized instead of scattered.
- Worth knowing: It is a strong value if you are already on the Festool platform, but check the compatibility exceptions first if you use the ETSC 125, RTSC 400, DTSC 400, or CTC SYS.
Common Questions
- Does this work with all Festool 18V tools? It is intended for most Festool 18V devices, but it is not compatible with the ETSC 125, RTSC 400, DTSC 400, and CTC SYS dust extractor.
- What is the main advantage of this energy set? The biggest benefit is runtime and charging efficiency. With four 5.0Ah batteries and a dual-bay charger, you can keep multiple tools running with less downtime.
- Is this a good match for Festool Basic cordless tools? Yes. Festool specifically positions it as an ideal addition to Festool Basic cordless tools or as extra battery packs for the workshop or jobsite.
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