Installed a new rechargeable battery and brushes in our oldest Roomba, a 531 model nicknamed “R2”. I have always enjoyed the modularity of many of these iRobot designs, which encourages replacements and even upgrades.Once it’s charged, I am excited to see how well the little fellow behaves. https://chirp.cooleysekula.net/attachment/87f2c1f7afb26f00c498a2145c48995fea1f184ab2fa9d660f1a8959e7a32751/view