Keep an eye on your battery charge.
Allows keeping the window always open with the information about current battery charge.
Application can estimate how much time a battery can hold until you need to charge it.
Additionally, you can view the history of the battery charge for the last 4 hours.
Note: Currently a device only provides approximate battery charge status with about 5% increments.
It can be not an exact battery charge that you can find in the settings.