This article explains different ways to charge a Lenovo laptop if you don't have a regular charger.
How to charge a laptop battery without a charger
Yes, you can charge your laptop battery even if you don’t have the charger with you. One of the easiest ways is to use a power bank or portable charger. Here’s what you need to do.
Charge the power bank via a power source.
Connect your laptop to the power bank and wait for it to charge.
