Mobile and fatigue-free: without cables and hoses, featuring perfect ergonomics, a low profile, and weighing only 1.4 kg. Powerful: The 18 V Ergo battery pack combined with the brushless EC-TEC motor delivers performance equivalent to that of a wall outlet. Continuous operation: thanks to the 3.0 Ah capacity battery pack, which runs longer than it charges. Unlimited runtime: For continuous electric operation, the battery pack can be swapped for the plug it power adapter (included in the set and available as an accessory). Dust-free and healthy: With the Longlife dust bag made of extra durable polyester fleece or in combination with a Festool mobile dust extractor. Less rework: PROTECTOR for gentle sanding along window surfaces, frames, and infills. Comfortable dust extraction: The battery pack communicates via Bluetooth with the Bluetooth module of the CLEANTEC mobile dust extractor (retrofit available for CT 26/36/48, directly integrated in CT MINI I and MIDI I) and automatically starts the dust extractor when the battery sander is turned on. The new battery compact sanders ETSC 125, RTSC 400, DTSC 400 ensure unique mobility and freedom of movement while working. The powerful 18 V Bluetooth Ergo battery pack with 3.0 Ah guarantees performance like that from a wall outlet and is the key to an extremely compact design with balanced weight distribution and perfect ergonomics at just 1.4 kg. The self-extraction combined with the Longlife dust bag allows for flexible handling of the machine – fatigue-free even overhead, vertically, or in hard-to-reach places. The Bluetooth battery pack enables effortless operation in combination with a Bluetooth-enabled Festool mobile dust extractor, ensuring that the vacuum automatically starts in AUTO mode when the battery sander is activated. For unlimited runtime, the battery pack can be swapped for the plug it power adapter – ideal for stationary applications and also in combination with a Festool mobile dust extractor.