DIGI TECH Replacement Wall + Car Battery Charger for Vivitar DVR-840XHD Camcorder AC wall and DC car two-in-one charger working for Vivitar DVR-840XHD Its unique flat pin, foldable design allows easy storage and makes it a compact battery charger Smart charging LED indicator automatically turns to trickle charge after the battery fully charged Auto switching power voltage is from 110V-240V Note it is an external battery charger only, not working as AC adapter, power cord, and USB cable