Digitec Power Bank
15000 mAh, 30 W, 55.50 Wh
Question about Digitec Power Bank
The Digitec Powerbank with 15 Ah has a rated output of 30 W. This is (maximum) what a single device receives via any of the two USB-C ports. I would therefore have expected that when charging two devices at the same time via USB-C, the devices would each receive (maximum) 15 W. In the instructions I find "USB-C1 + C2 + A: 15W shared", which I understand to mean that the devices will each receive a maximum of 7.5 W. If this is correct, why this big loss? And if not, what is correct?
Helpful answer
@Anonymous you have understood that correctly. With multi-charging, the output power is limited to 15W, i.e. 7.5W per device depending on the protocol. We have deliberately opted for this circuit to keep the heat development of the power bank low. Currently, simultaneous charging is easiest with our largest power bank: Digitec Powerbank (27600 mAh, 140 W, 99.36 Wh)
However, we take this as a point of criticism for the improvement and possible new powerbanks!
Without having checked it again myself, I think you understand correctly. If the power bank can handle 15W, it must divide this up between several devices. This is exactly what I know from electric car charging stations.