Nikon Quick Charger MH-18a is smaller than its predecessor model MH-18, and is capable of charging both the EN-EL3a and EN-EL3 batteries.
This compact Nikon battery charger is the direct replacement for the charger provided with Nikon D50 and D70s. The EN-EL3e battery is used in the D80, D90, D100, D200, D300, D300S, and D700.
Bought after forgetting a charger while travelling. Sells at Vistek for $75: http://www.vistek.ca/store/dslraccessories/220855/nikon-mh18a-quick-charger-for-enel3ae-battery.aspx.
Looks like new. Non Nikon brand charger is >$40.