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Is there a way to change the low battery warning threshold?

I have a slightly defective battery. The battery thinks that its capacity is higher than it is, and my system completely shuts off when the reported capacity hits 28%.

This actually isn't a huge problem-- I'm pretty diligent about watching it and getting plugged in before I hit 28%. BUT it would sure be great to get a low battery warning when I hit 38%.

(The ideal solution would actually be to reprogram the battery to think its capacity is accurate, but I don't think that's feasible without accessing its internal electronics.)

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It is possible to reprogram the battery without removing the battery from the laptop. Click here for a video discussing the topic. The White Paper on the subject and tools used can be downloaded if you click here

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Sure you can. There's a couple of different routes you can take:

Check out this MacOSXHints forum post on how to set up an Applescript that gets triggered at a certain battery percentage.

There are also 3rd party battery warning applications available, such as SlimBatteryMonitor, that lets you set the low battery warning level to whatever percentage you want.

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For wanting to add a certain feature or ability (like setting macbook to warn you when battery is a certain percentage low) Which route is preferred, setting an Applescript, orgetting a 3rd party app? (Wondering if adding apps may be not as ideal, because maybe each app you add might cause potential problems (compatibility issues, etc..)? Or am i guessing wrong? Thanks for explanation! :)

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It states that this issue has been solved but without a reply from Miroslav, we have no idea if any of these solutions worked. I too have "lost" the low battery warning from my 2009 macbook pro and have yet found a solution for getting it back.

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