Seeing we get at least one iPhone battery life-related thread every week, I thought of posting this video for a quick and easy summary to bust the most common myths.
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Other iPhone battery myths busted
- Thread starter akash.nu
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But someone will contest this battery related video and post ‘Its wrong’. Good information though.
This is pretty good basic stuff.
He makes the point that maximum battery health occurs when kept between 40-80%. This is true. He later says that laptop batteries aren’t damaged by being kept constantly plugged in. Also true, but it reduces their lifespan. It’s a known fact that lithium batteries perpetually kept at 100% charge lose their capacity quicker.
What concerns me a bit is that AirPods are constantly kept at full charge except when in use. For units without replaceable batteries this isn’t ideal. For a phone that’s constantly run up and down it’s not really an issue.
He makes the point that maximum battery health occurs when kept between 40-80%. This is true. He later says that laptop batteries aren’t damaged by being kept constantly plugged in. Also true, but it reduces their lifespan. It’s a known fact that lithium batteries perpetually kept at 100% charge lose their capacity quicker.
What concerns me a bit is that AirPods are constantly kept at full charge except when in use. For units without replaceable batteries this isn’t ideal. For a phone that’s constantly run up and down it’s not really an issue.
I've had my AirPods for 18 months, usually use theme at a time for talking on the phone or listening to podcasts while walking. It's hard to determine how much charge capacity has declined, because in my case they last several days before getting even close to needing a charge. It might be down a few percent. These things have their quirks but for me, battery life isn't one of them. I am glad I bought them.
Nice video. I’ve met too many people that I can count that hold onto these old myths. The most common one is probably the “I need to let it drain all the way to save charge cycles!” - that one seems to have a hard time dying.
I’ve left a lot of my Apple devices plugged in for a good portion of their lifetime - batteries these days handle that a lot better than batteries in the past. One reason why I continue to buy Apple is their quality batteries and no-nonsense battery management.
I’ve left a lot of my Apple devices plugged in for a good portion of their lifetime - batteries these days handle that a lot better than batteries in the past. One reason why I continue to buy Apple is their quality batteries and no-nonsense battery management.
I also love my AirPods. They’re a zero regret purchase.
I watch that channel and some of the stuff they post is wrong . Just saying
An essentially estimated measurement like that can and does fluctuate a bit with some tolerance aspect to it as well.
That’s pretty bad tbh. At this point I’m better off burning the crap out of it before the years up so I can get it replaced for free
Hah, my 6s+ came from the factory at 96% and kept that for almost 200 cycles. Usually it’s not a linear regression - so hopefully it doesn’t continue to degrade. But yeah, if you have AppleCare+ use it up cuz Apple will replace it if under 80% before 500 cycles and 2 years.
My 8+ and iPad 2018 are both above capacity, woohoo! CDM is right too - these things vary a bit depending on charge level and ... I guess temperature and everything else - so I usually give it a +-3% variance. So I have a big excel file where I write down charge cycles and capacity and try to do it once or twice a week. I follow this more than I do the one time % reading. This is why I don’t care too much about % - all my devices since I’ve started recording with my 6+ have been very consistent and have lost very little capacity over 2 years (bout the time I upgrade).
I just wish things were a bit more consistent but reading Isidor’s book (guy who does batteryuniversity) - I guess trying to get an accurate reading of a battery chemistry isn’t easy.
So since I’ve recorded 3 (iPhone 6+, 6s+, MacBook Air) devices religiously - I don’t worry so much about the battery. All devices don’t wear linearly and when I got rid of them, they all were close to design capacity.
I usually only read coconutBattery when the phone/Mac/iPad is at 100% charge (true 100%, meaning no wattage going in) - seems to be the most accurate there. Outside of that, I can get an 8% variance in readings.
Sorry for the wall of text. Batteries are a huge hobby of mine, lol. I’d highly recommend just screenshooting, hitting the + symbol in coconutBattery, or recording capacity/cycles in Excel/Numbers for a few months - should help.
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That’s pretty bad tbh. At this point I’m better off burning the crap out of it before the years up so I can get it replaced for free
Coconut battery tends to show more accurate measurement at 100% charge.
Well either way 97% or 99% with less then 30 days owning it it’s pretty bad. Guess I’ll have to burn it through fast before the years up
Oh at the start coconut stated it had a 2748 and now that. I noted the 2748 only a week ago. Don’t have Apple care plus since I don’t feel the need to spend 200.
I mean it all depends on your usage really, I’m using my 8 Plus since October and am still at 100%
I mean it all depends on your usage really, I’m using my 8 Plus since October and am still at 100%
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I mean it’s gone through 43 cycles and I’ve only owned the phone 26 days or so.
43 cycles within 26 days is very high usage actually. Essentially you’re depleting the battery down to 0% almost twice everyday!
Not really 0% I’ve been charging it twice per day around 40%? Heavy user atm because it’s literally my primary device atm since not using my MacBook much.
But if you’re charging from 40% then that won’t be counted as 2 cycles. The numbers don’t corroborate with what you’re saying.
Well those are the numbers. It’s not anything technically about it . It’s not always me deleting to zero because I rarely let it gone down that far. Sometimes it would be days where I leave at 100% and charge it at 30% when I go to sleep. Sometimes when I’m home it will be 40% mid day and I’ll charge it up to 100% again and any other ways. Not usually down to zero though
Well, that is how it supposed to be used, I am not sure why this has happened to you but if it provides any relevance, here is my cycle count in the last 9 months.
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I think it’s a faulty battery . Could I go to the Apple store for this ? I mean it shouldn’t be at 99% less then a month old ( May 29th)?
Just my opinion but I would not let them take my phone apart for 1%. I am not sure if they would.
My wife's laptop has dipped from 100% capacity to 97% capacity in 1 month, and now shows back to 100%. I wouldn't worry bout it - hence the suggestion of writing down your capacities over time - it fluctuates a bit but you wanna look at the long term. Use coconutBattery primarily when at 100% charge only (less than this can show an 8% difference).