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There is a box to show the battery’s power. We can see three circle on the top of the box, the circle show the power that the battery under it. So we can know how much the power that the battery has. The battery box can help us save more power and pay more attention to this kind of battery who no power showed.
The battery box can hold three normal kinds of batteries( D, AA and AAA ). The three circles showed the power of the three kind batteries.
Wuxi City Jiangsu Province, China
wuxi City jiangsu Province, China