You can check the charge of a battery when it is out of the tablet by pressing the battery check button on the rear.
If you remove the battery while the tablet is running, you only have one minute to replace it to keep the tablet running. If you need to remove it for a longer period, be sure to save your files. Then, shut down or plug into a power source.
If you have a battery out of the tablet, you can check the charge by looking at the rear and pressing the button to the left of the lights to view the charge level.
Battery Check Button
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Battery charge indicators
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Battery check button
The five lights on the back of the battery indicate the current level of charge—from one light (20% charged) to five lights (100% charged).
