Problem Statement: Wall mount setup does not prevent charger from coming off the wall during battery removal (from charger).
Discussion: The standard and rapid chargers mount the same way, but using two pan head screws. Installation is accomplished by adjusting the screws such that they are almost too snug to slip the charger over. But even adjusted perfectly, nothing prevents the charger from being pulled upward during battery removal. Which makes battery removal a two hand operation.
Solution: Added a block of wood to prevent upward movement of the charger. Battery can be removed with one hand.
Notes: For the Rapid Reload Charger, the top sits further away from the wall, so would need a slightly taller block (have not mounted my RR charger because it's sitting on a shelf).