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Model A1990 / EMC 3359. Released in May 2019 with new 6-core and 8-core processor options.

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Questions about battery life, lifespan and performance

Hello.

Just some days ago replaced the battery in my 2019 15 inch MacBook Pro A1990. I feel like the new battery is draining too fast and being charged back too slow.

I tried to find information on the net, but found it hard to pinpoint the right answer. Sometimes I found opposite answers and so.

I have 2 questions:

1- Is there a way to check if the new battery is performing as it should? (Downloaded coconutBattery (as mayer suggested in a previous post, thanks mayer!) :-)and it says “battery status: good). I mean is there a time frame that within it my battery should go from 0 to 100% and vice versa ( I’m aware that that would be up to what apps are currently open and many more factors but I’d like to find an indicator with clear definitions though).

2- How to give my battery the longest life and lifespan? (Again, during the 15+ years owning MBPs, I found different info about the subject.) Read the current tips at the Apple website. Any additional enlightening?

Thanks in advance

Saul

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Was the battery that bad in a 2 year old machine that you needed to replace it? I’m not trying to judge. Just curious why you replaced it so soon? I have a 2013 13” retina pro that just started giving me a “battery service” message last year and it held up pretty well. Unfortunately, Apple doesn’t sell OEM parts to anyone unless you’re an AASP so the batteries that are available are aftermarket or pulled from donor machines. If someone is selling you an OEM battery then they’re either lying or it was, as I mentioned before, pulled from a donor device. I myself have a cellphone, tablet, and computer repair shop and a part of some online forums and groups and some have discussed the quality of these aftermarket batteries in that they don’t compare to the OEM ones. One member even stated he’s had a customer come to him twice to replace her macbook battery. The OEM one went bad and the aftermarket replacement went bad after two years.

This is something Right to Repair can help resolve by requiring manufacturers to make their tools, parts, and repair guides publicly available to consumers and independent repair shops such as myself so that either you or independent shops can offer better service and keep prices low on repairs. When I asked apple how much it was to replace my battery, they said they don’t service my machine anymore because they considered it “vintage”. I asked if they knew anyone that would and said they were the only ones “capable”.

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Thank you for your input.

Well. My laptop started to turn itself off erratically and then several times it showed a higher % (like 45) but then, within 1 min went down to 3% and turned itself off.

When I tried to troubleshoot it, (after resetting PRAM, SMC and other stuff but didn't change anything) I read online that it’s faulty battery (if I remember well, one or several of the cells not working properly).

At least the “new” battery I made sure I buy from a reputable place (here, in iFixit)… :-))))

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@saul98765 - Let's take a look at what your CoconutBattery was showing with your original battery (if you saved a screenshot)

The number of cycles is what I would want to see. I agree with Jesse @hootonberg your system shouldn't have needed a new battery.

Apple has the following TN Determine battery cycle count for Mac notebooks If your battery was failing with less than 500 cycles I would have hit them for a warranty exception having them replace the battery for free as clearly it didn't even get halfway! Sadly, thats water over the dam at this point.

For now try not to let your system battery discharge too low that you burn the cycles. Lithium batteries do better in the middle third of charge when not used, and not allow the battery to discharge below the halfway point so you don't stress it charging. Make sure you are using the Apple charger and cable as some cheap chargers can damage your system and lastly make sure its the correct wattage for your system.

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Thanks Dan.

" Let's take a look at what your CoconutBattery..." Sorry, unfortunately I didn't keep this stuff, but, as you said... it's spilled milk.

"For now try not to let your system battery discharge...". Yes! That's exactly the info I came here looking for!

Very helpful and very much appreciated! Have a good evening!

Saul

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