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CMIzapper  Technology for your Mac repair business

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Battery Tool

The Chipmunk Battery Tool is an easy to use tool to see many interesting things about an Apple Battery.

It does many things:

1- Shows the Cycle Count

2- Shows Serial Number

3- Shows Capacity that the battery still has left

4- Shows if the 'Permanent Fail' Flag has been set, plus the reason why it has been set.

One of the uses is to distinguish between batteries that are dead and ones that are merely very discharged. If you charge a severely discharged battery VERY carefully it is often possible to bring it back to life. Within the Mac this will not happen because the Mac will only charge the battery once it can talk to the battery, but the discharged battery will not talk until it is charged (a little bit).


This Chipmunk Battery Tool can also clear the Permanent Fail (PF) flag in case it has come on. This might or might not fix the battery depending on the reason that the PF got set. If it got set because the battery was discharged too much or because you accidentally short circuited the battery briefly it will come back to life. But if, for example, the PF flag is set because because one cell is dead, resetting the PF flag will not solve the problem obviously, and the PF flag will probably come back on a few seconds later.

Battery Tool (Small Set)

This set consists of:

Chipmunk Battery Tool

Mini USB cable to power the tool

A4655 Adapter for MacBook batteries with Flex cable

Red banana probe to give battery some power (if necessary)

One Flex cable (6-pin to 10-pin)

Rubber nosed tweezers for manipulating Flex cables

JST cable to go between the Battery Tool and an Adapter Board


Battery Tool (Big Set)

This set consists of:

Chipmunk Battery Tool

Mini USB cable to power the tool

A4655 Adapter for batteries with Flex cable

Red banana probe to give battery some power (if necessary)

One Flex cable (6-pin to 10-pin)

set of rubber nosed tweezers for manipulating Flex cables

JST cable to go between the Battery Tool and an Adapter Board


The adapters below do not have the battery connector mounted! You will have to harvest one from a donor board and mount yourself.

A4656 Adapter for MacBook Air 13-Inch 2010-2017

A4657 Adapter for MacBook Pro 13-Inch retina 2013-2015

A4659 Adapter for MacBook Pro 15-Inch retina 2012-2015

A4658 Adapter for MacBook Pro Unibody


Price 250 Euro

Including shipping (world wide)

Price 300 Euro

Temporary introductory price 150 Euro

Including shipping (world wide)

Visit our Youtube channel for a video showing this Chipmunk Battery Tool in use.