Apple's Secret Battery Reset Utility for WallStreet and
Clamshell iBooks
Page not found | Low End Mac
Welcome Image and Text
We believe in the long term value of Apple hardware. You should be able to use your Apple gear as long as it helps you remain productive and meets your needs, upgrading only as necessary. We want to help maximize the life of your Apple gear.
If you're the owner of a PowerBook G3 Series (a.k.a. WallStreet) or a clamshell iBook and
have problems with your battery life or charging your battery,
you're in luck. Apple has a program named Battery Reset 2.0, and it
resets the microprocessor inside your battery so that it will allow
the battery to charge again.
The PMU (Power Management Unit) inside the battery is what tells
it if it needs more power and how much charge is left. Charging and
uncharging it causes a memory effect affecting the PMU thinking it
doesn't have a charge. This application resets the PMU and only
works on the models listed below.
Requirements
Any PowerBook G3 Series like M4753 and M5343 ("WallStreet") or
clamshell iBook M2453
Mac OS 8.1 and higher (sorry, no classic mode or OS X)
Instructions
Download and install Battery Reset 2.0 from Apple's
page. Then restart your computer and ensure you have a battery
inside your 'Book and it has power from a AC adapter.
Open Battery Reset and verify that you have power from an AC
adapter, then click OK. Then click reset to clear the PMU memory in
the battery. Then it will tell you to eject the battery and
reinsert it.
After that, you will see the battery start charging. Leave it
charging until it gets to 100%, and you're all done.
This little program doesn't work with the Pismo or any other
'Book out there, because it's unique to the PMU of the PowerBook G3
series. It saved be from buying a new battery more than once, and
it works great for those old free batteries you sometimes find in
surplus stores.
I can't guarantee it will work every time, and please read all
the warnings Apple has on their site. Also, don't try to take your
battery apart, because it can harm you, and please recycle your
dead batteries - don't throw them in the trash.
We believe in the long term value of Apple hardware. You should be able to use your Apple gear as long as it helps you remain productive and meets your needs, upgrading only as necessary. We want to help maximize the life of your Apple gear.
We believe in the long term value of Apple hardware. You should be able to use your Apple gear as long as it helps you remain productive and meets your needs, upgrading only as necessary. We want to help maximize the life of your Apple gear.
