Glad you like this product. This cannot be used for charging. The battery inside the robot is used to support the safety device to prevent falling. Because the robot needs 20 seconds to detect the glass plane.
Automatic Window Cleaner Robot Vacuum Cleaning Remote Control Electric Cleaner
Glad you like this product. This cannot be used for charging. The battery inside the robot is used to support the safety device to prevent falling. Because the robot needs 20 seconds to detect the glass plane.