The above article is a high-quality, compatible battery for your Roborock Sweep One S51. It is ideal as a replacement battery for your existing or defective Roborock Sweep One S51. It can also be used as an additional spare battery for travelling. It can be handled and charged as usual using the standard mains adapter/charger. The electronic protection against overcharging and short circuits offers a high level of safety. By using high-quality cells, a higher number of charge-discharge cycles can be achieved. This means a longer service life for your new Roborock Sweep One S51 battery. Quality is our top priority. This means that all batteries are new and unused. Our own quality assurance guarantees a high standard of quality. Note: If we do not expressly state that this is an original product, we supply a compatible product. This means that it is not an original product from the manufacturer and is therefore not manufactured or recommended by the manufacturer. All brand and product names belong to their respective owners and are used only to describe compatibility.