See the new Festool 5.0 Ah Battery: now HighPower!

• 18V 5.0 Ah Lithium Ion Battery with Airstream technology. When charged on an Airstream rapid charger, battery parks are charged quickly and effectively with active cooling during the charging procedure
• With Bluetooth®, which enables the CT Dust Extractor to be started automatically when the cordless tool is switched on (Bluetooth® capability on the CT Dust Extractor is required)
• Integrated LED display on the battery pack provides you with the charge status at all times
• Compatible with Festool 18 V cordless tools (except ETSC 125, RTSC 400, DTSC 400, CTC SYS)
• Weight: 1.55 lbs (.7 kg)