Key Features
18V Platform Power The Festool BP 18 Li 5,0 HP-ASI HighPower battery pack is built for Festool 18V cordless tools, so it fits into an established system instead of being a one-off battery purchase. 5.0Ah Capacity The 5.0Ah rating gives you a solid balance of runtime and size for day-to-day cordless work, especially when you need one battery that can move across multiple tools. Bluetooth Equipped Bluetooth is built into the battery pack, adding another layer of system integration for users already invested in Festool cordless equipment and charging accessories.
Overview
The Festool BP 18 Li 5,0 HP-ASI HighPower battery pack is an 18V cordless tool battery for the Festool system, model number 578519. This is a battery pack designed for powering Festool 18V cordless tools. If you need one battery that covers a wide range of everyday drilling, fastening, cutting, and jobsite tasks, this one is aimed at that middle ground where runtime, tool balance, and system fit all matter.
What stands out right away is the combination of 18V output and 5.0Ah capacity. In practical terms, that means this pack is set up for general-use cordless work instead of being a tiny low-capacity option for light duty only or an oversized battery meant purely for maximum runtime. For contractors and serious DIY users working across several tools in the same platform, that balance is usually the sweet spot.
Festool positions this battery for all applications and 18V devices with a few specific exceptions. That matters because battery compatibility is what makes a cordless platform worth buying into in the first place. Instead of matching a different pack to every tool, the Festool BP 18 Li 5,0 HP-ASI HighPower battery pack is meant to be the go-to battery for broad use across the 18V lineup.
The housing shown here is clearly marked AIRSTREAM, which ties it into Festool’s battery and charging ecosystem. On the job, that means this is not just a power source sitting in a tool. It is part of a broader cordless setup built around shared batteries and chargers, which is exactly what most users want when they are trying to keep downtime low and keep chargers, packs, and tools organized.
The battery pack also shows Bluetooth integration on the housing. That is useful for users already working inside Festool’s connected accessory and cordless environment, and it adds more value than a basic battery that only delivers power. If you are already invested in Festool cordless tools, system-friendly details like this tend to matter more over time than they do on day one.
Compatibility is the key buying point here, and it is worth being specific. This battery is described for Festool 18V devices except ETSC 125, RTSC 400, DTSC 400, and CTC SYS. That kind of exception list is exactly the information buyers need before adding another battery to the cart, especially if they are filling gaps in an existing kit rather than starting fresh.
Who should buy it? This is a smart fit for Festool users who want a dependable everyday battery for the 18V platform without overcomplicating things. It makes the most sense for people running multiple Festool cordless tools and wanting a battery pack that is versatile enough to move from tool to tool while still giving useful runtime. If your work is built around the Festool 18V platform, this is the kind of battery pack that earns its keep fast.
Built for Everyday Cordless Work
This battery pack is aimed at users who actually rotate batteries through tools all day. The point is simple: keep your 18V Festool cordless setup moving with a pack sized for broad, real-world use.
- Designed for Festool 18V tools
- 5.0Ah capacity balances runtime and manageable size
System-Focused Battery Design
The markings on the pack tell you what matters before you ever click into a spec table. This battery is part of the Festool cordless system, with platform, capacity, and connectivity called out clearly on the housing.
- 18V battery platform
- Bluetooth-equipped battery pack with AIRSTREAM branding
Key Specifications
| Voltage (V) | 18 V |
|---|---|
| Battery Capacity | 5.0 Ah |
| Battery Type | Li-Ion HighPower battery pack |
| Connectivity | Bluetooth |
| Charging System | AIRSTREAM |
| Product Type | Cordless tool battery pack |
Compatibility
Battery Platform Designed for Festool 18V devices. Charging System Part of Festool battery and charging technology and marked AIRSTREAM on the battery housing. Known Exceptions Not for ETSC 125, RTSC 400, DTSC 400, or CTC SYS.
Tool Nut’s Take
Tool Nut’s Take
Festool BP 18 Li 5,0 HP-ASI HighPower battery pack: the right kind of everyday battery
This is the kind of battery pack that makes the most sense for guys already running Festool 18V tools and wanting one dependable pack that can cover a lot of ground.
- Who it’s for: Festool users building out or expanding an 18V cordless setup for regular jobsite or shop work.
- Why it stands out: It gives you 18V platform compatibility, 5.0Ah capacity, Bluetooth integration, and AIRSTREAM system support in one battery.
- Worth knowing: Check your tool list before you buy. Festool calls out a few exceptions, so this is broad-coverage compatibility, not universal compatibility across every single cordless product they make.
Common Questions
- What kind of product is this? It is a lithium-ion HighPower battery pack for Festool 18V cordless tools.
- What is the battery capacity? This battery pack is rated at 5.0Ah.
- Is it compatible with all Festool 18V tools? It is described for Festool 18V devices, except ETSC 125, RTSC 400, DTSC 400, and CTC SYS.
- Does the battery support Bluetooth? Yes. Bluetooth is shown on the battery housing.
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