Can You Charge A Computer With A Phone. When your phone starts complaining that its battery. It should be fine.

Bring only those devices you use regularly. Avoid using fast charging ports unless you really need the phone charged fast. With the recent increase in popularity of certain standards USB-C and USB-PD the short answer is increasingly becoming the following.
Up to 7 cash back Charging with the USB Cable and your computer.
If it is something like. Even if the laptop had a specific module to accept voltage from the USB ports to charge the battery the input would need to have quite a high current to charge the battery. You have to center the phone on this mark. If youre working with the laptop using a slow charging port should be fine.
