Fix Your Stuff Community Store

2.0GHz, 2.3GHz, or 2.6GHz quad-core Intel Core i7 processor (Turbo Boost up to 3.8GHz) with 6MB shared L3 cache.

580 Questions View all

Options

How to check if MacBook battery is FULLY working

I have MacBook Pro 15” Late 2013 which shut downs randomly (fully black background BUT display backlight on for couple seconds - then switch off completely).

I’ve done SMC NVRAM resets - clean (no apps) High Sierra - El Capitan installations - clean up inside everything with compressed air - no liquid damage (all white stickers - even under heatsink and LCD connector) - everything appear to work fine - just that random shutdowns.

Battery got 770 cycles and says status "normal”

I’ve watched few videos with Luis Rossman - many problems with MacBook can cause faulty battery - but mine LOOKS (but I do not know) working ok.

How to find out? I look for answer something like - take multimeter and when You have 100% charged and it shows on pins (which I don’t know which one) ie. 13.9V that means it is faulty - o something like that.

If I would have boot loop like here https://www.youtube.com/watch?v=h9S2_F7G...

Or Battery status: “replace now” - I would not have questions - I would replace it right away - but I don’t want to spend about £50 and risk damage MacBook removing it just to see it was not battery fault :(

Block Image

Update (09/03/2018)

Untitled

Here it is - I’ve got 3 those reports - almost the same

Answer this question I have this problem too

Is this a good question?

Yes No
Score 0
1 Comment

Often times your system will create a crash report when the OS dies so you'll need to go to the Console app and take a look at the System Reports to see what it has. Save it as a PDF and post it here for us to see.

by

Add a comment

1 Answer

Filter by:
Most Helpful Newest Oldest
Most Helpful Answer

Options

As far as the battery: Cycle count is just one measure while it's a good lifetime measure it doesn't always catch failing batteries when a cell has degraded or if a connection is failing. So its possible the battery still needs to be replaced.

You may want to look at what the internal diagnostics tells you while it won’t test everything its a good starting point I would also recommend using a good thermal sensor monitoring app like TG Pro it might help explain things.

Was this answer helpful?

Yes No
Score 1

1 Comment:

I've used free MacFanControl - to be set on aggressive cooling CPU and GPU not higher than 45C - no changes

by

Add a comment

Add your answer

Bart will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 1

Past 30 Days: 2

All Time: 59