Depending on the needs of each person, I think 3W MA is a good point.
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30000 mah should refer to the charging bank, the capacity is 30000mAh=30Ah.
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1 KWH =1000 watt-hours =1000Wh=1000VAh.
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The charging treasure generally uses lithium electricity, the charging saturation voltage is 4.2V, the discharge cut-off voltage is 3V, and the average output voltage is 3.7V, so its total power capacity is about 3.7V*30Ah=111VAh=111Wh, which is equivalent to 111\/1000= 0.111kwh.
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Charging will have 20% to 40% loss, then full of this charging bank, need 0.111*(1.2~1.4)=0.133~0.155 degrees of electricity.
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Wireless charging Mobile Power:
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It refers to a mobile power supply that does not require a USB cable connection or a power cord to connect to a socket, and can achieve portable wireless charging outdoors. It has a big essential difference with wireless chargers. The principle of wireless charging mobile power: on the basis of traditional mobile power, add wireless charging function. In function, it is equivalent to the integration of a mobile power supply and a wireless charger.
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Because wireless charging requires a sending and receiving end, the mobile power supply is equipped with a sending device on the basis of the conventional mobile power supply, and the charging mobile phone must support wireless charging and have a receiving coil for wireless charging.