OK - I need some help here.

I have 3 RX batteries ( 2 are brand new) that I have charged for about 10 hours each on my charger that came with my Futaba radio system. When I put them on the Hangar 9 Voltmeter just after I pull them off the charger, they all show only just over 5.0 Volts and are "barely in the green".

Should I charge them longer? It just seems a little odd that they are all on the low end of the safe scale after 10 hours of charge.

Help - need some advice!!!