Nikon D3X D3X User's Manual - Page 463

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: Chamber lamps (green) Charge lamps (green) Calibration lamps (yellow) Calibration buttons Approximate time needed to recalibrate battery Over 6 hours 4 - 6 hours 2 - 4 hours Under 2 hours Calibration lamp K (glows) K (glows) K (glows) K (glows) 2 h K (glows) K (glows) K (glows) JK (off ) Charge lamps 4 h K (glows) K (glows) JK (off) JK (off) 6 h K (glows) JK (off ) JK (off ) JK (off ) 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. n 437