Magic items that use some form of "charge" or "ammunition" (such as feathers for the Staff of Rending Gale, Ender Pearls for the Ender Staff, etc) maintain their toggled auto-absorb state when removed from the player inventory, but will NOT absorb their charge. This makes, say, hooking up my giant enderman farm to a chest and just putting the item in that chest, or constructing a version of my automated assembly line that produces items fully charged, impossible. This also applies to "fake players" such as the Thermal Expansion Autonomous Activator, which can (if they have a "sneaky" option) toggle the item's state, but not make it absorb anything.

Tested with Sojurner's Staff, Touchstone of Midas, and Ender Staff.