Review on SPARKOLE Lithium Ion Battery 14.4V 5200MAh Compatible With IRobot Roomba 980, 960, 690, 600, 700, 800, 900 Series - Models 985, 970, 965, 895, 890, 860, 695, 692, 680, 675, 640, 614 by Emmanuel Chouinard

Bought this one to replace the same battery I had bought just less than a year ago that just up and completely died with no warning and of course it was out of warranty, hope it was just a bad one. Other wise up until it failed I had long run time and good cleaning this is why I said but in the headline. The battery appears to be of quality on the outside but the internals could be questionable, I just don't know. Hope this one last longer than the first. If battery life is no better than this it should be removed from site that's a fair chunk of change to spend in such a short period of time for something that should last for years.