system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do laptops not get horribly undervolted as their battery loses its charge?
gpt
So, first off, eg. li-ion has a pretty flat voltage graph during discharge. Also laptops have voltage regulators which prevent the fluctuations in battery voltage actually affecting the system - at least until you drop below the voltage you actually require, but that typically means the battery is lower than what is considered "0%" (because thats just some semi-arbitrary point which is based on many factors).