Canon EOS-1D X Mark III DSLR Camera (Body Only) - Manual (Page 801)

Battery Information
You can check the conditions of the battery you are using.
1.
Select [ : Battery info.].
(1) Model of battery or household power outlet accessory used.
(2) Battery level indicator (
) with the remaining battery level, in 1%
increments.
(3) The number of shots taken with the current battery. The number is reset
when the battery is charged (
).
(4) Battery recharge performance level.
(Green): Battery's recharge performance is good.
(Green): Battery's recharge performance is slightly degraded.
(Red): Purchasing a new battery is recommended.
Caution
Using a genuine Canon Battery Pack LP-E19 is recommended. If you use batteries
that are not genuine Canon products, the camera's full performance may not be
attained or malfunction may result.
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