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1

It sounds very much like the battery has died. What does the battery meter say in the menu bar, if you click it? Usually if the battery has already breathed its last, it will say "service battery" or even "replace battery immediately".


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Had similar problem, so took it to Genius Bar for investigation. Turned out to be the battery charger sensor module, which is built into the battery level indicator on the side of the Macbook (the 5 green light thing). It was malfunctioning, basically telling the Macbook that any battery was dead, even if the battery was good. YMMV.


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Repair costs are variable since you can choose to have Apple repair it or a third party. Why not start with https://locate.apple.com and get a quote from Apple? It's pretty easy to triage an iPad with a blank display. Plug it in to iTunes and if it doesn't show up after 15 minutes as a connected device, then charge for an hour from the correct wall charger. ...


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If your battery is at 100% and your MacBook is plugged in then the battery isn't charging or discharging, so it isn't using a charging cycle.


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I don't think it will hurt your iPhone. The charger is smart enough to stop charging when necessary. It is the number of charge/use cycles that degrade battery life and if you are attached most of the time its doing neither. I have had mine attached to a cable most of the time for over a year and not seen any degradation.


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This the battery failing, get it checked out and replaced for free.


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If it is still under Applecare I would absolutely get it checked out. In the very least if there is an issue, you will get the battery replaced under warranty and be able to enjoy a few more years with it.


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Apple does offer a one year warranty, so if you are the first buyer, you should be able to register and get them to replace the battery for free. I don't know exactly when they discontinued selling that model, but start with trying to register that device to you at support.apple.com using the serial number from the box. You might need to call into support or ...


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I've just gone through two brand new MacBook Pro Retina 15's, "fresh" from Apple Store, both of which were giving me only 3-4 hours on a fresh charge. After resetting NVRAM and SMC, I now get 5-6 or more hours. If you buy a new MacBook -- and are getting less than 5 hours per charge -- try resetting your NVRAM and SMC. How to Reset NVRAM: Shut down the ...



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