IRobot Roomba 500 series error and solution how to replace a dead battery

I created this video with the YouTube Video Editor (http://www.youtube.com/editor)<br /><br />-~-~~-~~~-~~-~-<br />Please watch: "IRobot Pool Cleaner in action" <br />➨ https://www.youtube.com/watch?v=zNwP11Ek90Y<br />-~-~~-~~~-~~-~-