SMLB is a free Chrome add-on designed to monitor lithium battery levels effectively. This tool provides alerts when your battery charge falls below 40% or exceeds 80%, helping users maintain optimal battery health. By keeping the charge within this range, SMLB aims to prolong the lifespan of lithium batteries, which are commonly used in many devices today.

The application operates seamlessly within the Chrome browser, making it easily accessible for users. With its straightforward functionality, SMLB serves as a practical solution for those looking to manage their battery usage more effectively. This tool is particularly useful for individuals who rely on their devices for extended periods and want to avoid the pitfalls of overcharging or deep discharging their batteries.