Karcher hard floor cleaner FC 2‑4 Battery Set 2B Duo — cordless hard‑floor cleaner with battery set

The Karcher FC 2-4 Battery Set 2B Duo is a cordless hard floor cleaner combining wet and dry cleaning in one pass. It features a freestanding design, low weight (approx. 2.2 kg) and automatic on/off function: simply tilt the handle back to start cleaning. The roller is automatically moistened from the clean water tank during operation, enabling consistent wet cleaning of hard floors. The device cleans up to approximately 70 m² per battery charge with a maximum run time of about 20 minutes. The integrated hair catchers collect hairs and the dirty water tank is hygienic and removable for easy emptying and cleaning. The set includes two replaceable 4 V Kärcher Battery Power batteries and a charger for two batteries.

Advantages

The cleaner performs wet and dry cleaning simultaneously, allowing collection of everyday dry and wet dirt in one pass and reducing the need for prior vacuuming. Its roller system and integrated hair filters improve removal of hair and pet hair, while the exclusive floor head design optimizes edge cleaning. The rollers are washable in a washing machine up to 60 °C, and the device supports upright parking for short breaks. The compact size and low weight make handling and storage easier, and the device operates at a low noise level.

Suitable for

• Everyday cleaning of hard floors (laminate, tile, sealed wood)
• Homes with pets or long hair where hair pickup is needed
• Quick clean-ups in apartments and small houses (up to ~70 m² per charge)
• Areas where low-noise cleaning is preferred

Key specifications

• Power source: battery (4 V Kärcher Battery Power platform)
• Clean water tank capacity: 200 ml
• Dirty water tank capacity: 100 ml
• Roller working width: 180 mm
• Floor drying time: approx. 2 minutes
• Sound pressure level: 55 dB(A)
• Battery type: lithium-ion, nominal voltage ~3.6–3.7 V (max 4.2 V)
• Battery capacity (per battery): 2.5 Ah
• Operating time per full charge: approx. 20 min (2.5 Ah)
• Cleaning performance per charge: approx. 70 m² (2.5 Ah)
• Fast charging time (80% / 100%): 50 / 70 min
• Weight without accessories: approx. 2.3 kg
• Dimensions (L × W × H): 220 × 240 × 1200 mm

How to use

Fill the clean water tank with water, attach charged 4 V Kärcher Battery Power battery(ies) and place the device on the floor. Tilt the handle back to switch the machine on; the roller will be automatically moistened from the clean water tank. Move the cleaner slowly over the floor to collect dry and wet dirt in a single pass. For short pauses, set the device in the upright parking position. After cleaning, remove and empty the dirty water tank and clean the hair catcher; rollers can be removed and washed in a washing machine up to 60 °C.

Usage recommendations

Use clean water only (additives only if recommended by the manufacturer). Charge batteries fully before first use and store batteries and device according to the manufacturer’s instructions. Empty and rinse the dirty water tank after each use to maintain hygiene and performance.