Festool 577323 HighPower Battery Pack BP 18 Li 8,0 HP-ASI

The powerhouse: An extremely powerful battery pack for maximum runtime and maximum power.
The most powerful and durable battery pack in the Festool range: Whatever the machine or application – the Li-HighPower battery pack provides maximum power and endurance (with a 54% longer runtime than a 5.0 Ah standard battery pack), even for heavy-duty applications.
Like all Festool battery packs, it is perfectly tailored to the brushless Festool EC-TEC motors, offering an extremely high degree of efficiency and maximum output per battery charge.
In addition, the powerhouse performs impressively during the charging procedure: Thanks to AIRSTREAM technology, the battery pack is actively cooled with the SCA 16 AIRSTREAM rapid charger before and during the charging procedure, meaning that it is ready for use again extremely quickly with maximum charging power.
Equipped with Bluetooth®, a paired mobile dust extractor starts automatically when the cordless tool is switched on. Additionally, when used in conjunction with the Festool Work app, you can find detailed information about the charge status and operating data, such as the temperature or charge cycles.
And, of course, it is fully covered by Festool Service.

Extremely powerful: Provides 8.0 Ah for extreme endurance and power even during the most demanding of heavy-duty applications – with a 54% longer runtime than a 5.0 Ah standard battery pack
Extremely durable: The high current resistant cells ensure durability
Charged in a flash: Ready to use again in just 27 minutes thanks to AIRSTREAM technology. This is made possible by the active cooling during the charging procedure
Practical: LED display for quickly showing the charge status
Safe: All-round frame made from soft-grip material for protecting the machine and setting it down safely on inclined surfaces
Convenient: Bluetooth® enables the CLEANTEC mobile dust extractor to be started automatically when the cordless tool is switched on (use of a Bluetooth®-compatible mobile dust extractor is required)
With smart extensions: The Festool WorkApp enables clever additional functions in combination with the Bluetooth® function of the battery pack, such as the detailed display of the charging status and further operating data such as temperature or charging cycles.
To quickly and easily identify the battery with the lowest charge status, you can flash the LED indicator directly on the battery pack.
Software updates are also possible: Install the newest version to work with the latest tool functions at all times
For stress-free work: The battery packs are, of course, completely covered with Festool Service
Bluetooth® lithium-ion (Li-ion) battery pack with AIRSTREAM function for all Festool 18 V cordless tools (except ETSC 125, RTSC 400, DTSC 400, CTC SYS)
ideal for applications with very high power needs, e.g. with HKC 55, AGC 18, CTC MINI/MIDI cordless extractors