Just a heads up. The key was left on our new XS mower long enough to kill the battery. After jumping it and mowing for an hour or so the battery was about stone dead. The mower was not charging. It turns out there are two 20 amp fuse in the charging circuit that will blow if the charging system has to recharge the battery when it is to low. Once the battery had a charge on it and the fuse was changed there were no more problem.