The Nikon MH-18a charger does not have a reset option. When a battery is inserted into the charger the light should flash slowly to indicate that the battery is being charged. When the battery is fully charged the light should stop flashing and remain lit. A fully discharged Nikon EN-EL3 battery should take approximately 120 minutes to charge. A fully discharged EN-EL3a or EN-EL3e battery should take approximately 135 minutes to charge. If your charger is not behaving according to specifications then there could be a malfunction- please contact Nikon Support for assistance: https://support.nikonusa.com/app/an...
answered 4 months, 4 weeks ago
4 months, 4 weeks ago