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升级级功能：这款带USB充电接口，输入反接保护功能，数码管显示，可以显示输入电压，输出电压，输出功率。还可以故障代码显示功能。里面采用微电脑控制。
升级版在原来的功能上增加了：USB充电接口， 数码管增加输出功率显示，显示故障代码功能；输出功率增加了20%，启动功率增加了50%，更智能更稳定。600W1200W2000w3000w，12V，24V，48V，60V，72V全电压升级版都带数显，都配置这些功能。购买的时候请选择带"升级版”。
Upgrade level features: This band USB charging port， input reverse polarity protection， digital display， can display the input voltage， output voltage， output power. You can also fault code display. Which is controlled by microcomputer.
An upgraded version of the original function adds: USB charging port， increase the output power digital display， fault code function; power output increased by 20% starting power increased by 50%， more intelligent and more stable. 600W1200W2000w3000w， 12V， 24V， 48V， 60V， 72V full voltage are upgraded with digital display， these features are configured. Please select the time of purchase with the "upgrade."
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