I think "Wrong?" if Salvo did what I think he did to his 7345.
Many power supplies have their output voltage controlled via a closed "feedback loop", with a sensing point for this loop near the output point (the output terminals) of the power supply. Without getting too deeply into how circuits work, what this does is to keep the voltage on the output terminals where it belongs (or where it was set at).
For a charger, moving this sensing point out to the battery terminals then makes the circuitry "think" that the battery terminals are now the "output point" of the power supply. The circuitry then internally adjusts the power supply's output voltage to whatever it has to be so as to get the sensing point (the battery terminals) to be at the voltage that was set on the power supply.
