Review on Hanaix 4800MAh Replacement Battery IRobot by Tim Lefebvre

Everything worked fine for the first 12 months. My Roomba lasted almost 1.5 hours on a full charge. After using about 20 times in two months, it now works for about 30 minutes after a full charge. Update: I contacted the seller. He suggested I check a few things and it didn't improve battery life. The seller sent me another battery. I like their customer service. I have to rate them higher.