Top positieve recensie voor 12V Oplaadbare Batterij op Banggood Netherlands|Shoppen Nederlands

57% OFF DC 12V 20000mAh Oplaadbare Draagbare Super Li-ion Batterijvoeding voor Zender US$20.99 US$49.00 View It

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BG367135316 24/12/2022

For these devices, the capacity is given in mAh at a voltage of the basic cells of 3.7 V - then a DC/DC converter is used. It is the same as a USB powerbank. The capacity in mAh at 12V is less than a third. It would be better to state the capacity in Wh, then this capacity would be the same at 3.7V and at 12V (excluding DC/DC conversion losses). The capacity expressed in this way is not only for this source, it is also used for larger backup sources consisting of 3.7V Lithium cells.

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