Replacement charger for cordless vacuum? Wyze claims they can’t replace it.

I gifted a family member a cordless vac + an extra battery for Christmas, and they have apparently lost the charger. I reached out to WYZE support and their answer is that “We have to process a replacement for the whole unit. Since we do not have the charger sold separately or a replacement for the charger alone. “

This is obviously absurd, so does anyone know the barrel size and charging specs of the charger so I can rig one up? The input charging specs are not printed on the batteries unfortunately. Thanks!