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Shed209

macrumors member
Original poster
Jul 11, 2014
73
1
I recently bought a 2015 Macbook Pro 13 Retina second hand, which turned up showing a cycle count of 0. The seller claims that the battery has not been changed, so I'm wondering if there's any other way for this to happen?
 
The data memory on the OEM battery is sealed with a key (password). Most users can't simply run in and reset the logs.

In all likelihood, the battery is not original.
 
Sounds like a glitch in the battery making it not report the count to me. How’s the battery life on it? You might want to consider replacing the battery since it’s already three years old and it seems to be at least having his issue.
 
I recently bought a 2015 Macbook Pro 13 Retina second hand, which turned up showing a cycle count of 0. The seller claims that the battery has not been changed, so I'm wondering if there's any other way for this to happen?

Did you also ask the seller if he had ever used the computer on battery only, thus requiring him to recharge the computer after use? If he says yes, he's used it on battery many times, then I would say there's a problem with the battery cycle count mechanism, whatever that is. Or...he's telling a tall one claiming the battery has never been replaced. Humans have been known to lie, you know.
 
Ok so the battery cycle count has ticked up to 2. So does that mean it's a legit battery with the correct chip onboard (maybe an official replacement?), or could there still be a problem here?
 
Maybe the owner just had the keyboard fixed under the extended replacement program ... which involves a battery replacement too?

Then sold it off.

It’s what I would’ve done ;)
 
Maybe the owner just had the keyboard fixed under the extended replacement program ... which involves a battery replacement too?

Then sold it off.

It’s what I would’ve done ;)

That doesn't make any sense.
 
Great, but how is that relevant to the 2015 model?

If I am understanding him correctly, he is stating that in general, her fixed something under warranty, and sold it off with the new part. Never mind it being a battery.
 
I recently bought a 2015 Macbook Pro 13 Retina second hand, which turned up showing a cycle count of 0. The seller claims that the battery has not been changed, so I'm wondering if there's any other way for this to happen?

You can always open it up to see if the battery is an original APPLE battery, if so he repaired it and sold it. Good news for you that you have a new battery. If the battery is bootleg, get a refund.
 
OP:

Some questions:
Does the MacBook look ok, cosmetically?
Does it boot right up, get you to the finder without problems?
Is the display in good shape?
Have you tried using the free Coconut Battery app to verify the "health" of the battery (by "health" I mean percentage of original capacity)?
If so, is the state of capacity reasonably close to 100%?
Does the battery charge properly when you connect the charger?

If the answers to the above questions are all "yes", my advice is:
Stop worrying about this.
It's small potatoes.

Take it for what it is and enjoy it.
 
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Open up the case and take a look at the battery to see if it looks like an OEM part. For the commenter who said maybe they replaced the battery which includes the top shell and battery, that is not relevant to the 2015 model.
 
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This is what the battery looks like (attached). Could it be aftermarket?
 

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This is what the battery looks like (attached). Could it be aftermarket?

Looks like a legit battery. Since your model has the ability to run diagnostics remotely, I would call Apple support and ask them to run diagnostics on your machine. Only takes a few minutes. Also ask them to run the power adapter test.
 
I downloaded CoconutBattery and it's saying the battery was manufactured on 19th Jan 2018, while the machine was manufactured in June 2016 - so I assume this means it isn't the original one. It says the manufacturer is Simplo, which from reading around is indeed a manufacturer of genuine Macbook batteries. Still wondering why the seller has not been up front about the battery being changed. Something is nagging me about this.
 
I downloaded CoconutBattery and it's saying the battery was manufactured on 19th Jan 2018, while the machine was manufactured in June 2016 - so I assume this means it isn't the original one. It says the manufacturer is Simplo, which from reading around is indeed a manufacturer of genuine Macbook batteries. Still wondering why the seller has not been up front about the battery being changed. Something is nagging me about this.

I can only imagine they had the keyboard or some other part serviced, and didn't know this involved a new battery too.
 
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I downloaded CoconutBattery and it's saying the battery was manufactured on 19th Jan 2018, while the machine was manufactured in June 2016 - so I assume this means it isn't the original one. It says the manufacturer is Simplo, which from reading around is indeed a manufacturer of genuine Macbook batteries. Still wondering why the seller has not been up front about the battery being changed. Something is nagging me about this.
I'd just be happy it's a brand new battery, but that's me.
 
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OP:

You're making mountains out of molehills.
You could have bought a used MacBook Pro with an old battery.
Instead you ended up with a NEW one.
Why worry about this?
If "the rest" of the MBP seems ok, I'd be ... pleased...!
 
I'd just be happy it's a brand new battery, but that's me.
OP:

You're making mountains out of molehills.
You could have bought a used MacBook Pro with an old battery.
Instead you ended up with a NEW one.
Why worry about this?
If "the rest" of the MBP seems ok, I'd be ... pleased...!
I would still call it out to the seller. Having a new battery obviously isn't a problem - a dishonest seller is. True, they may just be unaware, but I'd dig deeper.
 
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