The UV5r V2+ and the noted extended battery will work. The casing is essentially the same as the UV5R, internals are updated. The 3800 and 3600 mAh batteries are the same depth, just longer.Did the bracket end up working with the V2+ and extended battery? Looking at the UV-5R V2+ with extended battery today as well (on sale at Woot.)
The mount also works with the newer BF-F8HP radio with large cap 2000 mAh battery which is deeper than a standard UV5R battery by breaking off the top center tab on the radio mount.
Extended 38/3600 mAh
BF-F8HP with large cap 2000 mAh battery