Nikon FM2 - Manual (Page 68)

TIPS ON BATTERY USE
• Keep batteries away from infants and small children. In
case a battery is accidentally swallowed, call a doctor
immediately as the material inside the batteries can cause
serious problems.
• Battery power falls off in extremely cold temperatures and
this may cause the camera’s photometeric circuit to mal­
function. In this situation, use new batteries and protect
the camera body from the cold. Note that battery power
will be recovered as soon as the temperature becomes
normal.
• Should the battery be left In the battery chamber for a long
period, insufficient contact may occur due to battery
leakage. Thus, it is good practice to periodically clean the
battery and the contact section In the battery chamber
with a soft cloth. If the battery chamber Is stained with a
leaking battery, remove the battery at once and clean
the chamber.
• If you're using a pair of batteries, change them at the same
time; never mix new and old batteries.
• When not using the camera for a long period, take bat­
teries out and store them in a cool, dry place.
• Never disassemble batteries or discard them in fire.
• When using a pair of batteries, make sure they are of the
same make.
• Always check battery power before the shoofing session
because battery power can become exhausted without
warning. It is a good idea to have spare batteries on hand
during a protracted shooting assignment.
• In normal use, a battery's lifespan is about one year. The
battery packed with this camera, however, is for test pur­
poses only so its lifespan may be shorter than usual.
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