Two nights ago I did a 20 mile ride, returned home, battery level was a 50%. I plugged it removed the battery and plugged it into the charger and walked away (battery and charger on steel table). Come to find out it never charged, I rode about 18 miles tonight and as I arriving home the level on the screen drops to under 1/4. Take the battery out and once again plug it into the charger, nothing, no fan, no sound charger shows a green light. Removed the battery, unplugged and plugged the charger back in a few times and finally the charger kicks on and starts charger. However all this time the charge indicator on the battery is showing a Green light, not blue or red. Charger bad? Battery bad?