iRobot Roomba Robot Vacuum Cleaner Roomba 800 Series Roomba 870 2016 Model iRobot After purchase, I confirmed its operation and then stored it back in the box. Due to over-discharge, the battery was damaged, so I replaced it with a compatible battery (sold separately). I test-ran the main unit to confirm its operation (for about 10 minutes). The remote control and Virtual Wall also worked normally. Please understand that there may be minor scuffs, scratches, and dirt. There is some aging on the rubber on the side of the main unit. There is dirt on the metal part of the battery cover (Image 11). I cleaned the battery spring in the remote control because it had a little rust (Image 12). I accidentally put the battery cover of the Virtual Wall on backwards, causing a small scratch (Image 13). Set Contents / Roomba Main Unit Battery (Compatible Product Vemico 4050mAh 14.4V) Remote Control (Remote Navi) Home Base (Charger) Power Cord Auto Virtual Wall (2) Dust Cut Filter (Replacement: 2)…Unused Instruction Manual Quick Start Guide Dry cell batteries for operation check are not included. The original battery has been disposed of. The battery will be removed from the main unit and shipped separately. Discounts are not possible.