Bests & Worsts Reviews from Amazon

It should be noted for other buyers that when the instructions tell you to do a full charge and discharge 2-3 times when you first get it to make the battery last the longest, that you shouldn't just let the Roomba go back to it's base. For me, I got the battery, replaced the old one (which would only run for 10 minutes and then die), charged it (done in a few hours or less) then let it run. It ran for an hour then automatically returned to the base. But it returns home, not because the battery is empty but because it's hour of cleaning is done. So, you have to take it back off the charger and let it continue to run until it runs **all the way down** until it can't move anymore. The best way to do this is to stick it in a room where it can't get back to the base, or just unplug the base so it can't find it/recharge. When you find it stopped in a room, *start it back up* until it won't start again. For me, it ran for another solid hour (over 2.5 hours total)! Once it's fully dead, charge it up fully and start that process over again and do it a total of 2-3 times. After that, it lasts a long time and has way more charge (2x+) than it needs to clean. I've seen other reviews on other replacement Roomba batteries where I think the buyer assumed that when it returned to the base that it was empty and let it charge again... that is not the case and doing it that way will cause issues for the battery for the rest of it's life.