I’m confused how a battery indicator works? One time, I got 4 bars, and it got full charged in less than one hour. Most of the times, I get five full bars, and I recharge Instinct. It keeps recharging for several hours, and the battery indicator never stop animating. Whenever I want to recharge it, it doesn’t recharge at all, and battery indicator is not animating. So, what is the deal?