Nikon L830 - Manual (Page 172)

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Battery Type
To ensure that the camera shows the correct battery level ( A 20), select the type that
matches the batteries currently in use.
Firmware Version
View the current camera firmware version.
d button M z menu icon M Battery type M k button
Option Description
k Alkaline (default setting)
LR6/L40 (AA-size) alkaline batteries
l COOLPIX (Ni-MH)
Nikon EN-MH2 rechargeable Ni-MH (nickel metal hydride)
batteries
m Lithium FR6/L91 (AA-size) lithium batteries
d button M z menu icon M Firmware version M k button