Device shows battery low after replacing battery.

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MacBook Pro 13" Retina Display Early 2015

The March 2015 update of Apple's 13" MacBook Pro Retina Display, model A1502, features fifth-generation Intel Core i5 and i7 processors and introduces the Force Touch trackpad.

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Raj Kapadia @raj14k

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Опубликовано: 4 апр 2022 г.

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Device shows battery low after replacing battery.

I recently replaced the battery on this device. I did the calibrating of the battery properly (I think). When I leave the screen on unplugged, after an hour or so, the screen turns off. When I try to wake the device, I get the dreaded battery dead icon. But when i plug it in, the device will turn on and be a few percentage off from when I left it. I.e. battery at 66% device goes to sleep, screen turns off, try to wake, battery dead icon, plug in, wake device, battery at 62%.

Any idea what is going on? Has this happened to anyone?

Ответ на этот вопрос У меня та же проблема

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Let’s get a better view of things, install this gem of an app! CoconutBattery take a snapshot of the apps main window and post it here for us to see Adding images to an existing question

4 апр 2022 г. из Dan

@danj added the ss. Battery looks good to me as intended.

4 апр 2022 г. из Raj Kapadia

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Let’s get a better view of things, install this gem of an app! CoconutBattery take a snapshot of the apps main window and post it here for us to see Adding images to an existing question — Dan

score 2 · Answer 1 · 2022-04-05T04:14:29-07:00

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Dan @danj

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@raj14k - Well I do see a problem! SMC needs a hard reset as its still holding old battery info.

Note the battery manufacturing date is a date older than the system manufacturing date!

So carefully disconnect the battery and with nothing plugged in press and hold the power button to fully discharge the logic board. Now plug in your MagSafe charger your system should spontaneously boot up. Let it finish booting and properly shut it down. Now disconnect the charger and reconnect the battery.

Let the system charge for a good four hours and while the MagSafe is plugged in. take a fresh snapshot of CoconutBattery.

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