Juice 2.1

Juice is a teeny-tiny application that allows you to track the charging level of your laptop battery.
Juice is in fact a Macintosh widget, that installs in seconds and provides you with the latest updates about your battery status. Depending on your preferences, it can be hidden in the Dashboard or you can drag it to your desktop. If you choose to let it on your desktop, Juice will stay on top of any other active windows, including browsers and players. This is its main advantage, if we would have to compare it with Macintosh's in-built battery meter.

Juice is capable of providing basic information about your battery, such as the charging level, how much it will take for the battery to be fully charged or until it's empty and its status, if it's idle or charging. The application has a very realistic interface, being designed as a real battery.

Juice is a free application, so you can use it without any kind of restriction.

All in all, Juice is a recommended battery charge screen widget.