주요 콘텐츠로 건너뛰기

기기를 고치세요

수리할 권리

부품 & 도구

MacBook Pro 15" display 모델

7416 질문 전체 보기

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

답변되었습니다! View the answer 저도 같은 문제를 겪고 있습니다

좋은 질문 입니까?

점수 1

댓글:

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

의견 추가하세요

LCD iPhone 스크린 수리 키트

평생 품질 보증이 적용되는 저렴한 옵션.

키트 쇼핑하기

LCD iPhone 스크린 수리 키트

수리의 질 말고 비용을 절감하세요.

키트 쇼핑하기

답변 3개

선택된 해법

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!

해당 답변은 도움이 되었습니까?

점수 3
의견 추가하세요
가장 유용한 답변

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.

해당 답변은 도움이 되었습니까?

점수 3
의견 추가하세요

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?

해당 답변은 도움이 되었습니까?

점수 0

댓글:

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).

의견 추가하세요

귀하의 답변을 추가하십시오

Collin Reisdorf 가/이 대단히 고마워 할 것입니다.
조회 통계:

24 시간 전: 2

7일 전: 19

30일 전: 99

전체 시간: 13,682