1. Carefulnessly read narrate book of battery,use commendatory battery.
2. Research whether the electric appliance and the Nikon en-el9 Digital Camera batteries contact elements is whether clean, when necessity clean with the wet cloth mop, after dry loads according to the correct polar direction.
3.When non-adult custody, don’t let the child replace the battery, compact battery like AAA should be placed at somewhere the child can't attain.
