Nikon Z8 User Manual page 55

• Remove the battery from the camera or charger when not in use. The
camera and charger draw minute amounts of charge even when off
and could draw the battery down to the point that it will no longer
function.
• Do not use the battery at ambient temperatures below −10 °C (14 °F)
or above 40 °C (104 °F). Failure to observe this precaution could
damage the battery or impair its performance. Charge the battery
indoors at ambient temperatures of 5 °C–35 °C (41 °F–95 °F). The
battery will not charge if its temperature is below 0 °C (32 °F) or
above 60 °C (140 °F).
• Capacity may be reduced and charging times increase at battery
temperatures from 0 °C (32 °F) to 15 °C (59 °F) and from 45 °C (113 °F)
to 60 °C (140 °F).
• Batteries in general exhibit a drop in capacity at low ambient
temperatures. Even fresh batteries charged at temperatures under
about 5 °C (41 °F) may show a temporary increase from "0" to "1" in
the setup menu [Battery info] age display, but the display will return
to normal once the battery has been recharged at a temperature of
about 20 °C (68 °F) or higher.
• Battery capacity drops at low temperatures. The change in capacity
with temperature is reflected in the camera battery-level display.
As a result, the battery display may show a drop in capacity as the
temperature drops, even if the battery is fully charged.
• Batteries may be hot after use. Observe due caution when removing
batteries from the camera.
Caring for the Camera and Battery: Cautions 55