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If iPhones are really experiencing that rate of degradation, then Apple are solely to blame for using such an aggressive battery management profile. If they had

If iPhones are really experiencing that rate of degradation, then Apple are solely to blame for using such an aggressive battery management profile. If they had given up a millimetre of thickness, overprovisioned the battery and managed it less aggressively, they could have easily reduced battery degradation to <20% after 1,500 cycles. Adding 50% to the capacity also gives you 50% more current at the same C-rate. I think this is a clear case of Apple prioritising shelf appeal over durability; it's the same root cause as the Galaxy S7 battery crisis.

baddox 9y ago
Idk if the grandparent comment is correct about the degradation rate, but I’d need to see more evidence supporting the claim that Apple is doing something aggressive relative to the rest of the industry. Overprovisioning the battery is silly, and would deservedly cause a much bigger controversy if it were discovered.
- jdietrich 9y ago
  >Overprovisioning the battery is silly, and would deservedly cause a much bigger controversy if it were discovered. Really? Would there be a strong negative reaction if Apple said "we've designed the iPhone 9 to give you all-day battery life for four years"? Would customers be angry that their device was built to last longer and perform better? To my mind, it's a marketable feature. All battery management is a trade-off between capacity and durability. Manufacturers have an obvious commercial incentive to sacrifice durability - you get a thinner device with longer initial battery life. Purchasing habits are starting to change in the mobile market. Pricing is moving away from an all-inclusive line rental price to separate usage charges and device payments. As the market matures, customers are holding onto their devices for longer. I think it's inevitable that manufacturers will have to improve durability as we move away from the lock-step of 24 month contracts.
nordsieck 9y ago
> If iPhones are really experiencing that rate of degradation, then Apple are solely to blame for using such an aggressive battery management profile. Consumers are responsible at least as much as manufacturers for the current state of phones. Manufacturers may create the designs for phones, but consumers vote with their wallets for what they want, and they've consistently voted for thin over longer battery life.
- jdietrich 9y ago
  There's a difference between battery life and battery longevity. The Galaxy Note 7 had a fairly beefy 3500mAh battery, but Samsung tried to cram too much capacity into too little volume. The unconventional pack shape created a substantial risk of internal shorts. Poor thermal management or aggressive battery management can vastly increase the rate of battery degradation, but they're non-obvious and most tech journalists don't have the knowledge needed to identify those issues. Most consumers don't understand battery technology and don't know what's available on the market. They go into their local cellphone store and choose whatever looks nice and is recommended by the salesman. They aren't aware of handsets with bigger or user-replaceable batteries, because the industry hasn't really offered them the choice. I use a Chinaphone with a giant battery, but I have a lot of knowledge that no average consumer has.

baddox 9y ago

Idk if the grandparent comment is correct about the degradation rate, but I’d need to see more evidence supporting the claim that Apple is doing something aggressive relative to the rest of the industry. Overprovisioning the battery is silly, and would deservedly cause a much bigger controversy if it were discovered.

jdietrich 9y ago
>Overprovisioning the battery is silly, and would deservedly cause a much bigger controversy if it were discovered. Really? Would there be a strong negative reaction if Apple said "we've designed the iPhone 9 to give you all-day battery life for four years"? Would customers be angry that their device was built to last longer and perform better? To my mind, it's a marketable feature. All battery management is a trade-off between capacity and durability. Manufacturers have an obvious commercial incentive to sacrifice durability - you get a thinner device with longer initial battery life. Purchasing habits are starting to change in the mobile market. Pricing is moving away from an all-inclusive line rental price to separate usage charges and device payments. As the market matures, customers are holding onto their devices for longer. I think it's inevitable that manufacturers will have to improve durability as we move away from the lock-step of 24 month contracts.

nordsieck 9y ago

> If iPhones are really experiencing that rate of degradation, then Apple are solely to blame for using such an aggressive battery management profile. Consumers are responsible at least as much as manufacturers for the current state of phones. Manufacturers may create the designs for phones, but consumers vote with their wallets for what they want, and they've consistently voted for thin over longer battery life.

jdietrich 9y ago
There's a difference between battery life and battery longevity. The Galaxy Note 7 had a fairly beefy 3500mAh battery, but Samsung tried to cram too much capacity into too little volume. The unconventional pack shape created a substantial risk of internal shorts. Poor thermal management or aggressive battery management can vastly increase the rate of battery degradation, but they're non-obvious and most tech journalists don't have the knowledge needed to identify those issues. Most consumers don't understand battery technology and don't know what's available on the market. They go into their local cellphone store and choose whatever looks nice and is recommended by the salesman. They aren't aware of handsets with bigger or user-replaceable batteries, because the industry hasn't really offered them the choice. I use a Chinaphone with a giant battery, but I have a lot of knowledge that no average consumer has.