About this item Compatible with eufy Robot Vacuum Omni S1 Pro and Omni S1. Made with high-quality battery cells, offering intelligent and comprehensive battery protection solution, real-time monitoring current and temprature which help boast a durable lifespan. Simply remove the robot's battery cover, unlatch to take out the old battery, then insert the new one with the sticker side up. Ensure the battery wires are neatly tucked inside the compartment for a perfect fit. Replace the battery about every 6 months in case of affecting the vacuum cleaning efficiency. Note: To protect your robot vacuum machine and extend its lifespan, buying our branded robot vacuum replacement parts is recommended, as we have received customer complaints from relevant non-compliant sellers. Please note that you may receive accessories in different packaging, but rest assured that they are all from our company with the same high-quality. .