Nikon d3s User Manual (en)

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Calibrating Batteries
The MH-22 quick charger is equipped with a battery calibration 
feature. Calibrate the battery as required to ensure the accuracy of 
the camera and charger battery level displays.
If the calibration lamp for the current 
battery chamber blinks when a 
battery is inserted, the battery needs 
to be calibrated. To begin 
calibration, press the calibration 
button for the current chamber for 
about a second. The time needed to 
calibrate the battery is shown by the 
charge and calibration lamps:
When calibration is complete, the calibration and charge lamps will 
turn off and charging will begin immediately.
Although calibration is recommended for accurate measurement 
of battery charge state, calibration need not be performed when 
the calibration lamp blinks. Once begun, calibration can be 
interrupted as desired.
• If the calibration button is not pressed while the calibration lamp 
is blinking, normal charging will begin after about ten seconds.
• To interrupt calibration, press the calibration button again. 
Calibration will end and charging will begin.
Approximate time needed 
to recalibrate battery
Calibration 
lamp 
Charge lamps
2 h
4 h
6 h
Over 6 hours
K (glows)
K (glows)
K (glows)
K (glows)
4 – 6 hours
K (glows)
K (glows)
K (glows)
JK (off )
2 – 4 hours
K (glows)
K (glows)
JK (off)
JK (off )
Under 2 hours
K (glows)
JK (off )
JK (off)
JK (off )
Chamber
lamps (green)
Charge lamps
(green)
Calibration
lamps (yellow)
Calibration
buttons