So I travel a lot and actually bought a second battery charger for my vision spinners. I plugged the new one in to the wall at home a few days before leaving on my last trip and it seemed to work (I charged one of the spinners I took on my trip and it held out until day 4 without needing a re-charge). The last day of my trip I charged both my spinners and packed them in my carry on. The next day i was using one of my batteries and it was totally dead! I am currently charging it with my "old faithful" charger and am just wondering: is my new charger total crap or did flying somehow drain my spinner's charge?