Prosser: iPhone 12 MagSafe Battery Pack to Feature Reverse Charging

Apple is working on MagSafe-compatible battery packs that will be compatible with the iPhone 12 models, and leaker Jon Prosser today said on the Genius Bar podcast that one version of the battery pack will feature "reverse charging."
According to Prosser, Apple is working on two versions of the battery packs, one that's a standard version and one that's a premium version with reverse charging. Prosser does not go into detail on reverse charging, but presumably this means that the battery pack wi