Review on Powerextra 7.2V 2200mAh Replacement Battery for iRobot Braava 320/321 & Mint 4200/4205 by Patrick Freddie

I tested the battery and it lasted longer than the original battery. I will update the review in 6 months. In addition, the cable polarity was reversed in the product image. the actual battery had it in the right place. Update: You need to charge the battery 6 hours before use to get the best performance. I get about 2 hours and 10 minutes of cleaning per charge cycle. I will update my review after 6 months.