Originally Posted by
mozilla
AFAIK this is less of an issue in modern devices, which have much better battery protection algorithms. In these devices, when the software says "100%," it will actually be lower than 100% in the battery, and "0%" will actually be higher than 0%.
Sometimes, there are buffers, but they are minimal and usually only on the lower end. It's not really in the interest of electronics manufacturers to make battery capacity that isn't used.
FWIW: Apple tapers charging beginning at 80% on iPhones and 90% on iPads to dissipate heat. They also "optimize charging at 80%" until an hour or so before they think you wake up. Almost all manufacturers have some version of that.
My EV warns me every time I set the charge target over 90% Paraphrase: "Charging the battery over 90% should only be used for long trips. Continuous charging to 90% can shorten the life of your battery".
Originally Posted by
mozilla
Well, they have happened in cargo holds; just ask UPS. IIRC until this day only cargo pilots have perished as a result, although a Li-Ion fire has been mentioned as a possible cause for the disappearance of MH370.
I don't profess to know what happened on MH370 (but I'd love an answer to that mystery). However, a fire that manages to kill/incapacitate everyone onboard...disable tracking systems...change heading to fly somewhere without radar coverage...and continue flying for 6 more hours is highly unlikely.