The phrase "battery meter" refers to a device or feature that shows how much power is left in a battery. It helps you keep track of the battery's energy level and know when it needs to be charged or replaced. Full definition
A four - LED battery meter shows current charge status, and the whole thing weighs 4.4 ounces. (slashgear.com)
This isn't a fix to improve battery life, it's just a method to get help your phone's software battery meter align with your battery's actual charge. (android.gadgethacks.com)
When there's a discrepancy between your phone's software - based battery meter and your battery's actual charge level, it can have some confusing results. (android.gadgethacks.com)