Why do our phones die almost instantly when they are at 15 or 10% battery?
In: Technology
[This chart will explain it.](https://batteryuniversity.com/_img/content/discharge_voltage_of_lithium_iron_phosphate.jpg)
The chart shows lifopo4 batteries, but modern li-ion and li-poly batteries are very similar.
Batteries will generally have a pretty flat power curve, then fall off at the end.
Source – I work at a battery company and [Cadex is a great source of knowledge](https://batteryuniversity.com/learn/article/how_to_measure_state_of_charge) and we use their battery analyzers.
They dont, if yours do then you either have a rly shitty battery in it (probably some Deacent dendrite build up)
Or you are running very old software that is not capable of accurately calculating your power consumption and / or energy density.
Lithium Ion batteries have a “memory” and a minimum voltage, if they go below 15-10% there is a chance that they will be below the voltage, and when that happens standard chargers can’t excite the chemicals in the right way to start producing a recharge.
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