The
larger
buffer capacity of the D1H has meant a change in the battery management
compared to the D1.
The
D1H requires more reserve power before the shutter release to
ensure that after a long burst on a low battery, there is still
enough power to empty the buffer and save the pictures to CF card or
firewire. Therefore the battery indicator will show “low” earlier in
the D1H than in the D1.
To ensure maximum operating efficiency, batteries
used with the D1H should be refreshed every 20 or 30 cycles and the high
continuous drain caused by shooting long bursts will result in a battery
life being reduced compared with operation in the D1 and D1X