So I left my bike in the rain with battery attached. I rode about ten miles when the rain quit. When I got home I tried to unlock my battery but there was a spark when I stuck in the key. Got up the next morning, charged my battery. Then I biked a good 30 miles. Now when I plug in my battery, the charger is green, like it’s fully charged. But it’s almost drained. It doesn’t seem to be charging. Should I b worried?