A "laptop battery" refers to a rechargeable power source used specifically in laptops. It is the device that provides energy to the laptop, allowing it to run even when it is not connected to a wall outlet. Full definition
Click - to - play allows you to conserve download bandwidth, improve page load times, reduce CPU usage, and extend laptop battery life. (howtogeek.com)
Of course doing the same for laptop batteries is great too. (treehugger.com)
This means cell phone batteries, hearing aid button cells, and common AA / AAA batteries available in retail stores as well as standard laptop batteries. (travelinsurancereview.net)