How to Monitor the Battery on Your Nexus 7 Tablet
You can find information about the Nexus 7 tablet’s battery status in the upper-right corner of the screen, in the status area, next to the time.
Heed those low-battery warnings! The Nexus 7 alerts you whenever the battery level gets low, at about 15 percent capacity. You see a warning on the screen, urging you to connect to a power supply at once.
Another warning appears when the battery level sinks below 5 percent, but why wait for that? Take action at the 15 percent warning.
The battery status is also found on the Quick Actions shade.
When the battery level is too low, the Nexus 7 shuts itself off.
The best way to deal with low battery power is to connect the tablet to a power source: Either plug it into a wall socket or connect it to a computer by using a USB cable. The Nexus 7 begins charging itself immediately; plus, you can use the device while it’s charging.
You don’t have to fully charge the Nexus 7 to use it. When you have only 20 minutes to charge and you get only a 70 percent battery level, that’s great. Well, it’s not great, but it’s far better than a lower battery level.
Battery percentage values are estimates. The Nexus 7 has a hearty battery that can last for hours. But when the meter gets low, the battery drains faster. So, if you get 8 hours of use from the tablet and the battery meter shows 20 percent left, those numbers don’t imply 2 more hours of use. In practice, the amount of time you have left is much less.