I just recived my new S4 2 camera kit from Amazon i got the home base setup and removed the batterys from the caneras to charge them, plug 1 into the home base to charge top USB port and the other into a 5V 2amp charger block. they have bee on charge since yesterday at 11:00 am est that is about 12 hours of charging. it still has the red light showing i would think they should be done by now? what am i doing wrong?