Charge Controller is a free Chrome extension developed by allen-n. It falls under the category of Browsers and is a subcategory of Add-ons & Tools. This extension aims to help users maintain their battery between selected percentages in order to optimize battery lifetime.

The main feature of Charge Controller is the ability to automatically turn a smart outlet on/off at certain charge percentages. By reducing the depth of discharge of your lithium-ion battery from 100% to 10%, you can potentially increase its longevity by up to 25,000%. This extension utilizes the Battery Status API and is an extension of the battery-info-chrome-extension by radibit.

With Charge Controller, users can easily extend the lifespan of their li-ion batteries and improve overall battery longevity. By following the recommended charging practices, users can optimize their battery performance and ensure their devices last longer.