I have a Razor MX650. I replaced the batteries last year and at the end of the season, they would not charge. I thought something was wrong with the charger because it would not go from red to green. It would just stay solid green. So i replaced the charger and it did the same thing so I just assumed the batteries were bad so I replaced the batteries. I ran it once with the new batteries and now when I go to charge it, they will not charge. The charger does the same thing. What am I missing here. I can't have 2 bad sets of batteries can I? Hoping to get some suggestions here.