Note: Please pay attention to performance. The item mentioned above is a high-quality battery for your Irobot Roomba 620. It is an excellent replacement battery for your existing or defective Irobot Roomba 620 battery. It can also serve as an additional spare battery for on-the-go use. Handling and charging are as usual straightforward with the standard power supply/charger. A high level of safety is provided by the protective electronics against overcharging and short circuits. The use of high-quality cells allows for a greater number of charge-discharge cycles, which means a longer lifespan for your new Irobot Roomba 620 battery. Quality is our top priority. This means that all batteries are new and unused. Our own quality assurance ensures a high quality standard. Note: Unless we explicitly state that this is an original product, we supply a compatible product. This means it is not an original product of the manufacturer and is therefore not produced or recommended by them. All brand and product names are the property of their respective owners and are only used for compatibility description.