Hand vacuum wall mount

We recently replaced an old hand held vacuum with a fancy new 'Lithium powered' Black & Decker model (Model No. HHVJ315JD10). After unboxing it, I realized that the only way to store the thing was to lay it down. Our old unit had a charging cradle that mounted to the wall, so we had it mounted up out of the way in a closet.

The new vacuum didn't have a mount, and Black & Decker doesn't make one for it either. I did notice that the underside of the vacuum had a slot that was angled upward. I