Apple(?) built a storage case for two PC Cards as a weight saving device in the battery case form factor. My favorite replacement "battery" is my currently DOA power adapter (Linde?) in the battery form factor. Worked internally or externally.
ISTR Apple doing the same for one (or more?) of the dual battery G3 PowerBooks?
ISTR Apple doing the same for one (or more?) of the dual battery G3 PowerBooks?