Nikon SB-910 - Manual (Page 118)

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Tips on Speedlight Care and Reference Information
Notes on Batteries
Because flash consumes a large amount of battery power, batteries may not •
operate properly before reaching the end of their stated lifespan or the number
of charges/discharges as specified by the battery manufacturer.
When installing batteries, turn off the power of the Speedlight and never reverse
•
the polarity of the batteries.
If the battery terminals become soiled, remove dirt and smudges before use, as
•
this may cause malfunction.
Depending on battery specifications, when batteries become hot, the SB-910’s
•
safety circuits are activated, cutting off power. This often occurs when the flash
unit is operated repeatedly. Battery power will recover when the temperature
returns to normal.
Battery power tends to weaken as the temperature drops. It also gradually
•
decreases when batteries are not used for a long time and recovers after a short
break following intensive use. Be sure to check battery power and replace the
batteries with fresh ones if you notice any delays in the recycling time.
Do not store batteries in locations subject to high temperatures and high
•
humidity.
Be sure to read the user’s manuals for your rechargeable batteries and battery
•
charger for detailed information on how to handle and recharge the batteries.
Never attempt to charge batteries that are not rechargeable batteries, as they
•
could explode.
Ni-MH
Recycling
rechargeable
batteries
To protect the environment, do not dispose of
used rechargeable batteries yourself. Instead, take
these batteries to your nearest recycling center.