While you're right about lithium batteries not developing a memory, you're probably incorrect about the overall idea of recalibration.
This recalibration is not calibrating the battery, it's calibrating the phone. What the phone shows you for your battery status is very much a guess based on what it thinks it should be consuming. It's a good idea to let the battery drain down to the warning once in a while, then charge it back up completely.
Also, lithium batteries do NOT like being COMPLETELY drained. I wouldn't recommend running the phone until it shuts off. I'd only run it until the warning shows up, then plug it in to charge it up fully.
A battery is like a muscle. It does need some exercise to stay healthy.
Well, I'm not sure I agree with you on a lot of this. I mean surely the phone just reads the batteries voltage and calculates a percentage. I'm sure it's told that (and I'm just going to make up numbers because I don't want to do the research to support all this ) 4100mv = 100% and 3975 = 90% and so on. Not a fancy solution, but very reliable and easy to do. Isn't that the way it works? No calibrating - hard coded numbers.
I did read a couple of articles recently about lithium batteries and all said that lithium batteries will last longer with frequent charges. In other words, do not do any deep discharge before charging as that shortens the batteries life.
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