Nikon F4 Body Only, F4S instruction manual Checking Batiery Power, LRSe-e

CHECKING BATIERY POWER

With High Speed Battery Pack MB-21

At temperatures around 20°C (68°F), AA-type alkaline-manga- nese batteries give the highest overall performance, including faster advance rates and a greater number of rolls of film. At lower temperatures, however, the perfor- mance of alkaline-manganese batteries deteriorates. For shooting at low temperatures, it is advised that you use NiCd batteries. (See table on page 108).

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Push the battery check button.

If both LEOs light up, power is sufficient.

You can also check batteries by confirming that the viewfinder LCD is on, in the same manner as when using the MB-20 (see

next page).

If only one LED comes on, replace batteries.

If neither LED lights up, batteries are exhausted or improperly loaded.

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