This is not an expensive part, but it is a difficult project. If your iBook has a good battery and gives you the wrong date every time you turn it on, you need to replace the PRAM capacitor. Sometimes that capacitor goes bad, preventing the PRAM from getting any power at all. ![]() Instead of a PRAM battery, iBooks have a PRAM capacitor, which can hold a charge for a short while – perhaps 20 seconds – so you can swap out a nearly drained battery for a charged one and not lose the PRAM settings. That’s the biggest indicator of a dead PRAM battery in most Macs, but in iBooks it means no power is getting to the PRAM. If you remove your ‘Book’s battery or let it run out of juice, the PRAM loses its settings and your ‘Book will think it’s 1969. ![]() Instead, the parameter RAM (PRAM for short) is maintained by using the charge in the iBook’s battery.įor the sake of convenience, we will use the term iBook or ‘Book to encompass the various iBook models as well as the 12″ PowerBook G4. Neither does the 12″ PowerBook G4, which is based on the iBook G4. Unlike most Macs before and since, iBooks do not have a PRAM battery. ![]() Apple made an unusual decision when it designed the original iBook, the one with the handle.
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