Nikon SB-910 AF Speedlight Users Manual - English - Page 118

Notes on Batteries Tips on Speedlight Care and Reference Information • 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. Recycling rechargeable Ni-MH batteries To protect the environment, do not dispose of used rechargeable batteries yourself. Instead, take these batteries to your nearest recycling center. H H-7