When using an RE-Battery in the field to recharge an item (in my case a diamond drill), grabbing the battery and holding right button causes the energy level displayed for the battery to go down, but does not cause the energy level displayed for the drill to change. Subsequently, using the drill once will cause its energy level to be updated; also, trying to move the drill between inventory slots makes it disappear, though it's still present and can be dropped and reacquired to update the energy indicator. To be clear, this is a display issue only.