Nikon SB-400 User Manual

19

• Take the Speedlight out once a month, insert the batteries, and fire the unit 

several times to reform the capacitor.

• When the Speedlight is stored together with a desiccant, renew the desiccant 

occasionally.

• An extreme temperature change can cause condensation to form inside the 

Speedlight. When exposing the Speedlight to high temperatures from very low 
temperatures, or vice versa, place it inside an airtight container such as a plastic 
bag. Leave it inside the container for a while before gradually exposing the 
Speedlight to the outside temperature.

• Avoid exposing the Speedlight to strong magnetic or radio waves from televisions 

or high voltage power transmission towers, as this may cause it to malfunction.

• Because flash consumes a large amount of battery power, rechargeable batteries 

may not operate properly before reaching the end of their stated lifespan or the 
number of charging/discharging as specified by the battery manufacturer.

• If the battery terminals become soiled, remove dirt and smudges before use, as 

this may cause a malfunction.

• 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.

Ni-MH

To protect the earth's environment, do not 
dispose of used rechargeable batteries 
yourself. Instead, take these batteries to 
your nearest recycling center.