I doubt it - too much risk of applying >5V to a Pi3d4real wrote:Hi,
I've got a simple question: Can I use a Qualcomm Quick Charge 3.0 charger?
For example this one (output 3.6-6.5V / 3A, 6.5-9V / 2A, 9-12V / 1,5A (Max.)):
https://www.amazon.de/gp/product/B01E3M ... IF17&psc=1
An "ordinary" USB cable of >=2 metres could give you additional problems (too much resistance). Better to cut the provided cable and "splice in" an extra length of equivalent cable. The power supply only uses two low, resistance wires for power - a standard USB cable, of similar thickness, will have extra wires and the wire resistance (per unit length) will be higher. More to the point of the suitability of the device - a charger is not the same as a power supply - they do different jobs. A power supply has to supply a "fixed" voltage (for the Pi ~5V) over a large range of current draw, down to a minimum voltage at the maximum current, including cabling losses (for the Pi ~4.6V). A charger's voltage can be allowed to drop more rapidly, it only has to be "just high enough" above the battery's voltage due to the present charge level to maintain charging current to flow (for a typical 'phone battery that's ~3.8V). You can find quite a few measured examples of both "loading" behaviours within my webpages starting here:3d4real wrote:the problem is the cable. I need at least 2 meters, so I want to plug in a micro USB cable.
That should be fine (AFAICT from the details in the link).3d4real wrote:thanks for your answer. I think I found a power suppy that should fit.
https://www.amazon.de/iTrunk-Raspberry- ... teil&psc=1
Is the RPi Zero W more tolerant of using a charger as a power supply? I need temporary power for an in-car setup and considering this 12V splitter which has QC 3.0 USB ports to power a RPi 3 or RPi Zero W:
Thank you for confirming that. The power section of the FAQ says the recommended PSU current capacity is 1.2A, so I was hesitant about purchasing the 12V splitter I linked to because of the Quick Charge 3.0 USB ports that regulate current on demand.
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