megamindmaster:

As it is to be used for a laptop how long does it stay when fully charged? Can it power 2 laptops? And how much is it...

It charges only one laptop at a time; it has only one port. I told you it's solar, which means you can use it throughout as long as you charge it with sun energy or power (light). It can conserve power just like inverters. It's 20k but the price will still depend on when you want to buy.(that is, availability determines d price)

Trippledots:

Pls what kind of laptop or laptop battery supplies light for up to 6hrs. Light is a major drawback for me. Thanks #iv been a silent follower since#

Since you already have a laptop you don't need to go buying another. I could help you with a solar/AC power charger if you are in Lagos. You can place the panel in the sun to charge or plug to electric power when have light and store for use later. And it will serve you long enough depending on what you use it for.