Nikon D300 User Manual (en)

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Batteries
: Dirt on the battery 
terminals can prevent the camera 
from functioning and should be 
removed with a soft, dry cloth 
before use.
Batteries may leak or explode if 
improperly handled. Observe the 
following precautions when 
handling batteries:
Turn the product off before 
replacing the battery.
The battery may become hot when 
used for extended periods. 
Observe due caution when 
handling the battery.
Use only batteries approved for 
use in this equipment.
Do not expose the battery to flame 
or excessive heat.
After removing the battery from 
the camera, be sure to replace the 
terminal cover.
Charge the battery before use. 
When taking photographs on 
important occasions, ready a spare 
EN-EL3e battery and keep it fully 
charged. Depending on your 
location, it may be difficult to 
purchase replacement batteries on 
short notice.
On cold days, the capacity of 
batteries tends to decrease. Be 
sure the battery is fully charged 
before taking photographs outside 
in cold weather. Keep a spare 
battery in a warm place and 
exchange the two as necessary. 
Once warmed, a cold battery may 
recover some of its charge.
Continuing to charge the battery 
after it is fully charged can impair 
battery performance.
Used batteries are a valuable 
resource. Please recycle used 
batteries in accord with local 
regulations.