Nikon Z8 User Manual page 56

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Charge Batteries Before Use
Charge the battery before use. The supplied battery is not fully charged
at shipment.
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Ready Spare Batteries
Before taking photographs, ready a spare battery and keep it fully
charged. Depending on your location, it may be difficult to purchase
replacement batteries on short notice.
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Have Fully‑Charged Spare Batteries Ready on Cold Days
Partially-charged batteries may not function on cold days. In cold
weather, charge one battery before use and keep another in a warm
place, ready to be exchanged as necessary. Once warmed, cold
batteries may recover some of their charge.
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Battery Level
• Turning the camera on or off repeatedly when the battery is fully
discharged will shorten battery life. Batteries that have been fully
discharged must be charged before use.
• A marked drop in the time a fully charged battery retains its
charge when used at room temperature indicates that it requires
replacement. Purchase a new rechargeable battery.
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Do Not Attempt to Charge Fully‑Charged Batteries
Continuing to charge the battery after it is fully charged can impair
battery performance.
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Recycling Used Batteries
Recycle rechargeable batteries in accord with local regulations, being
sure to first insulate the terminals with tape.
56 Caring for the Camera and Battery: Cautions