i haven't used my camera in awhile... real life has taken its toll.. but i got back into the game last week with my d200 and a single fully charged battery. i noticed that the low-battery-light indicator would keep going off, so i'd turn off the camera and try again (and hope it would work). usually, it did. sometimes, it didn't, and the shot would come out pitch black. i thought it was a battery issue. i have 3 nikon-brand EN-EL3E batteries (no MB-200 battery pack) and went on an excursion today, ensuring that i'd charge them all to their fullest. the MH-18a charger seems to notice that the battery needs charging, and after 3-4 hours, the light is no longer flashing. all my batteries seemed to be fully charged when i went out today. however, within 10 minutes of using each battery, i got the low-battery-light indicator. all of the sudden, i'm discouraged and wondering what is broken -- is it my D200 camera, my battery charger, or my 3 batteries?