Skip to main content

Fix Your Stuff

Right to Repair

Parts & Tools

MacBook Pro models with a 15" display

7608 Questions View all

How many is too many charging cycles for a laptop battery?

I'm thinking abut buying a used early 2009 Macbook Pro 15 at a college sale, so these will have been used by different students (one student per laptop though).

I have a 2006 Macbook Pro 17 that has 454 cycles, and using terminal it shows the "MaxCapacity" = 4746, "DesignCapacity" = 6300. It lasts a couple hours still, but when it dies, it is unable to sleep, and just shuts down. I'm hoping to avoid this with the newer laptop. So I'm wondering what the threshold is for replacement (so I can add that to the price if needed).

To see what your battery cycles/capacity are, in terminal use: ioreg -l | grep Capacity

Answered! View the answer I have this problem too

Is this a good question?

Score 1


I found Apple's guide on the matter, gonna take this with me.


Add a comment

Essential Electronics Toolkit

Small Toolkit. Big Possibilities.

Shop Toolkits


Shop Toolkits

3 Answers

Chosen Solution

Variations in use and manufacturing likely make purchase decisions based on cycles probably a bad idea. what if you only discharge halfway? What if you drain the battery until the laptop dies everytime? What if you operate in greatly varying temperatures? Is the laptop in your backpack getting banged around often? All these things have the potential to reduce battery life. Really you just want to find the laptop with the least use (if possible). And hey, worst come to worst, we have plenty of guides for MacBook Pro 15" to help you swap the battery quick and painlessly!

Was this answer helpful?

Score 3
Add a comment
Most Helpful Answer

For our stocking purposes, after about 200 cycles you'll see decreased performance and over 500 may need to be replaced. But this is mostly bad info.

What you really want to look at, are the mAh (milliAmp hours) numbers you included which is basically a count of the number of electrons that the battery can contain.

So your battery can hold ~75% of the electrons it used to be able to. It should be replaced, if possible.

Was this answer helpful?

Score 3
Add a comment

I've got a 5 year old Macbook 15" with 1653 cycles that lasts a number of hours (never bothered to check) before running out of battery. iStat claims the battery to be at 92% health...

Any thoughts on the matter?

Was this answer helpful?

Score 0


Only thought I have is that 1653/365~=4.5 years, that means you've managed to fully charge the battery (assuming that OSX is accurately calculating cycles) almost every day for the life of that laptop. Nice work (I think).


Add a comment

Add your answer

Collin Reisdorf will be eternally grateful.
View Statistics:

Past 24 Hours: 1

Past 7 Days: 32

Past 30 Days: 100

All Time: 13,877