Nikon D300 User Manual page 85

[] Using AA Batteries
EN-EL4aor EN-EL4rechargeable Li-ion batteries (available separately) or
EN-EL3erechargeable Li-ion batteries are recommended for best
performance. Fewer pictures can be taken with AA batteries (pg. 417).
The capacity of AA batteries drops sharply at temperatures below 20 °C
(68 °F)and varies with make and storage conditions; in some cases,
batteries may ceaseto function before their expiry date. Some AA
batteries can not be used; due to their performance characteristics and
limited capacity, alkaline and nickel-manganese batteries should only be
used if no alternative is available and then only at warmer temperatures.
The camera shows the level of AA batteries asfollows:
Control panel Viewfinder
(blinks) (blinks)
Description
Batteries fully charged.
Low battery. Ready fresh batteries.
Shutter release disabled. Change batteries.
Battery level for EN-EL3e, EN-EL4a, or EN-EL4 rechargeable Li-ion batteries
is displayed normally.
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