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Plug DC power into charger, 4 indicators are light, LED is green(no battery)
没有电池情况下，接上电源，4个指示灯是亮的，LED为绿色。
youdao
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Measuring DC voltage and current, the LED display, and display power.
测量直流电压电流，在数码管上显示，并且可显示功率。
youdao
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Measuring DC voltage and current, the LED display, and display power.
测量直流电压电流，在数码管上显示，并且可显示功率。
youdao