Which to me is more in tune with the shutdowns. Disabled Coconut reads the battery at 84.5% and 138 cycle count. Of course the message appeared "This iPhone has unexpectedly.". Stayed at 100% very long but in late 2019, down to 98% on iOS 14.2 and now in December 2020, still at 98%? but the phone has experienced perhaps 3 shutdowns in the 6 past months.
February 2018, two years after I bought it, battery was 81%. One reason why I prefer Apple products is that they, in general, have had far superior battery life and longevity over other products I've had in the past. My Dell D830's battery couldn't hold a charge after a year and shut the laptop off instantly when unplugged. My Samsung Note 3, rooted, showed it losing 50% of its design capacity in less than 7 months (thankfully batteries were easy to replace and cheap). My Dell XPS 15, purchased last year (2018) during Black Friday, according to Window's own battery report, has lost 10,000 mAh since I bought it. I imagine companies prefer to keep this information "hidden" as it would show non-favorable results. I wish companies would give us more access to battery information. The author of this book is the author of and I've had the privilege of conversing with him via a short email. My only claim to fame is that I've read several times. This is only my opinion - I'm a battery hobbyist only.
#Coconutbattery ios full
On the topic of Apple's Battery Health meter - I think they only read at near full charge and probably are programmed to read high values because if it showed 80% or lower it would qualify the user for a replacement on a less than year old (or two for AppleCare+) phone. I think that these batteries dip in voltage and capacity from 20-60% and tend to stabilize more after 80% charge when doing capacity readings. I do think reading a chemical reaction like a Lithium Polymer battery is "difficult" and not 100% accurate after time. I don't think coconutBattery is inaccurate. It is not a guaranteed thing that after 500 cycles your phone's battery will be 80% capacity - Apple just warranties that it will be >=80%. Battery wear is not linear like a glass of water. My boss' 4s had 86% capacity after many years and 1200?+ cycles. I do not see a problem with a phone having a 95% capacity after 1000 cycles. I believe Apple got a batch of bad batteries that had difficulty maintaining their voltage as the phones aged hence their willingness to do cheap battery replacements to help satisfy these unhappy customers. This is the same thing my wife's 6s+ did (voltage drop). The fact that your phone's performance management was enabled means the battery dipped below acceptable voltage. On an older battery, this capacity difference will widen significantly, especially if a reading is taken further away from a full charge.Īpple's health meter is definitely pre-programmed to take a different approach to reading battery capacity. I've seen a 3-6% capacity difference when reading below a full charge, even more at a 20-40% charge. For consistency I only read at full charge. Battery capacity can vary depending on when you do the reading. Getting an accurate reading on them is difficult, especially over time.
Later on, during the battery fiasco that spawned the Battery Health reader in iOS, Apple refunded us $50 without us having to do anything.īatteries are a chemistry. In so doing, they destroyed my wife's 6s+ and we got a new 6s+. They shrugged their shoulders and had to be forced to let me pay them for a new battery out of pocket. We showed them how it shut off below 70% with any load. Of course, when we took it into Apple, they showed "green" and healthy. coconutBattery showed her battery capacity randomly fluctuating between 40%, 60%, and 90%. Less than 6 months into ownership, her phone would randomly shut off and last easily half as long as my identical phone. My wife's 6s+ was the only anomaly in our lineup of phones from the 6+ to the Xs MAX. Most of my other phones strayed a percentage or two (6+ and 8+) - this includes iPads. The worst was my 6+ that went from 108% from design capacity to 98% after almost 2 years. I'm a light user and my wife is a heavy user of her phone.Īfter 2 years and 230 - 300 cycles my phones have had little to no battery degradation in terms of overall capacity. My wife gets the same phone I do so I have 2 phones to "observe" and compare against with very different usage. I usually keep my phones for 1.5-2 years. I take weekly readings and focus on the battery capacity vs design capacity. I have watched all of my devices with coconutBattery since the 6+, to the 6s+, to the 8+, and now Xs MAX. As a self prescribed battery hobbyist, I must admit I'm not entirely sure what is going on.
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