Was hoping to get some help on what I hope is an easy fix. Got this stacker about 2 weeks ago and ran and charged great. We used it yesterday and tried charging it and it suddenly wont charge. It just plugs in to a normal outlet and from what I've read the red light is supposed to blink, indicating its charging. Now when plugged in the red light stays solid and we cant get it to charge at all. Was working just fine prior to battery getting drained with use. Any ideas? Any help would be much appreciated.