MacBook Pro Early 2015 shuts down at 20% battery

flaketina wrote:

Hello!

In the last 3 day the MacBook Pro shuts down when battery mark 20%, but not send the message of need to charge. I installed CoconutBattery and this is what it shows:

https://discussions.apple.com/content/attachment/15bc3faf-ca55-47fd-b4b6-80418c2058fb

I was surprise for the design capacity were in red!

So what can I do? I need yo changed the battery or recalibrated?

Thanks in advanced!

//:0

You can Try resetting the SMC https://support.apple.com/en-us/HT201295

About Mac notebook batteries

https://support.apple.com/en-us/HT204054

Batteries - Maximizing Performance - Apple

https://www.apple.com/batteries/maximizing-performance/

Determine battery cycle count for Mac notebooks

https://support.apple.com/en-us/HT201585

Apple considers 80% full charge capacity the minimum before the battery is considered problematic. Is this the original battery that came with your notebook or a replacement?

Again, according to Apple, "your battery is designed to retain up to 80 percent of its original capacity at 1,000 complete charge cycles." So, you can expect to continue past 1,000 cycle counts, just with diminishing returns in terms of battery life.

I suggest that you also use Apple's System Information > Hardware > Power > feature to double-check the CoconutBattery results. leroydouglas also provided you with some excellent articles for your review as well.