General description vhbw offers a high-quality replacement battery designed specifically for the Kärcher RLM4 Robotic Lawnmower. This battery features a high capacity, ensuring optimal performance for your garden tools and appliances. Technical specifications Battery type: Li-ion Capacity: 2500 mAh Voltage: 18 V Energy: 45 Wh Number of cells: 5 Weight: 262 g Compatibility and accessories Compatible with Kärcher RLM4 Replacement for Kärcher part number: 6.445-098.0 Other information Our batteries and cells fulfill all operational safety guidelines.