The Nikon MH-34 Battery Charger is a dedicated wall charger for conveniently charging EN-EL15b and EN-EL15c lithium-ion batteries. In order to utilize the MH-34, it must be connected to either an EH-8P AC adapter, EH-7P charging AC adapter, or a compatible third-party AC adapter that supports USB power delivery. If using the MH-34 with an EH-8P AC adapter, an additional UC‑E25 USB cable needs to be purchased separately.
It is important to note that the MH-34 battery charger is not compatible with charging EN-EL15a or EN-EL15 lithium-ion batteries.