system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why can I turn on my laptop right away when I plug it in after it dies but I have to wait a while for my phone?
gpt
Your laptop computer is designed to run off its power supply. When the power is disconnected, the device switches to its battery. The phone is designed to run off its battery. When the power is connected, the device charges the battery. So when the battery becomes exhausted, it needs to be partially charged before the phone can work.