Review on Maximize Your IRobot'S Efficiency With SPARKOLE'S 5300MAh Extended Life Lithium Ion Battery For Roomba 500-800 Series by Matt Schmick

I purchased this battery in late January. It worked great initially, but around September, It stopped charging. We were using our roomba about once a week or less, so it was not that it exceeded the advertised 1000 charges. I don't see a way here of contacting the manufacturer as it is stated that the battery has a 1 year warranty