What really grinds my gears is when you hit that final 5% and it drops to 0% within 20 seconds. I’ve plugged it in within that time frame and still watched it turn off on me.
Completely discharging a battery damages it. That’s why all phone OSes are programmed to… bend the truth a little bit. When a phone reports 0% battery to you, it’s often more like 20% in reality. Once it goes to a critically low state (under about 20%) it shuts down to preserve what it has until the user gets some charge into it.
Likely what’s happening there is that once a certain threshold triggering the emergency power-saving shutdown starts, it doesn’t matter what’s physically going on with the battery. The safety shutdown has already begun.
My old phone at least did this thing:
The final countdown.While that is what I normally see, the last time I was at my BFs I put my phone down before I went to sleep at 1%. It was still at 1% when I woke up in the morning. Somehow.
Go to sleep, 5%.
Wake up, 0%. Battery flashing.
Plug in phone, phone dies.
The vibration and screen flash of plugging it in used up the very last bit of juice it had. 🤣
Reboot, oops that was too soon, phone still sleepy, phone dies again seconds after boot
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