What’s the difference between V-Mount and Gold Mount Batteries?

The ONsite D-Tap Battery with V-Mount (and other V-Mount batteries) dock and mount with a V-Mount system, and the D-Tap is the plug to access the power. Our ONsite Aero V-Mount is power compatible with both V-Mount and Gold Mount batteries as they both have D-Tap plugs but will only seamlessly mount with V-Mount batteries.