3 ms·
The critical importance here is if you plan on keeping your phone for a long time, a degraded internal battery is fundamentally the limit under the current sche
by endisneigh 4y ago
The critical importance here is if you plan on keeping your phone for a long time, a degraded internal battery is fundamentally the limit under the current scheme.
Or to put it another way, imagine you had a battery that only lasted a single minute, and a magsafe battery that lasts a full day. How long is your phone going to last? What will happen is that both your internal battery and magsafe will be drained, with the magsafe being drained the most. Eventually your internal battery will die, and so will your phone.
The other issue with using the internal battery (pass through, or charge) is that you're wearing it down more.
Maybe the behavior is different in an iPhone 14?
- mardifoufs 4y agoLi-ion battery degradation is minimal, or even negligible when they aren't cycled across different capacity ranges AFAIK. What that means is that current charging the battery while it is getting discharged at a similar rate (which usually means a constant battert voltage) doesn't induce wear in the same way as charging the battery from a capacity of 10% to 100% (or even from 75% to 80%) does. But that could be different when that constant charge/discharge is happening at high capacity levels, lithium-ion batteries are weirder when they are at their maximim voltage. My knowledge is rusty at this point so let me know if I got any of this wrong.