Panasonic's cga-d54 is a battery designed to work with select panasonic minidv digital camcorders. this battery is immune from "memory" effect, so you can fully recharge it any time you like and there's no need to wait for it to drain completely.
works with the following panasonic cameras hvx200ap,ag-hvx200,ag-hpx170p,a6-dvc7 and ag-dvc30.