Has anyone ever noticed how long the battery takes to fully charge in the Controller? I charged it overnight, and it was good to go. Turned it on for about 5 minutes to set up a tablet adapter. Put it back on the charger for a "top-off". It's been on the charger for 4 hours now and hasn't gotten to a full charge, according to the indicator. It seems that it should be a LOT faster than that!