Calibrating batteries – Nikon D4 User Manual

Page 466

440

Calibrating Batteries

The MH-26 battery 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 flashes 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 flashes. Once begun, calibration can be
interrupted as desired.
• If the calibration button is not pressed while the calibration lamp

is flashing, 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)

4 – 6 hours

K (glows)

JK (off )

2 – 4 hours

K (glows)

JK (off )

Under 2 hours

K (glows)

JK (off )

Chamber

lamps (green)

Charge lamps

(green)

Calibration

lamps (yellow)

Calibration

buttons