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Uncommon ways to charge an USB device?

Forums Forums Gear – The Stuff We Carry Electronic Devices Uncommon ways to charge an USB device?

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    A lot of our electronic equipment like smartphones, flashlights, USB power banks, etc. can be USB charged – hence I’m carrying an USB charger cable in my EDC pouch, but not an USB power supply (which is carried in my bag, which i don’t always bring with me).

    The idea of the cable-without-power-supply carrying is to have a way to charge the smartphone, etc. in an emergency at any accessible USB port, especially when not a home.

    To be very specific: it’s a short USB A to USB C cable, to which an USB C to Micro USB adapter has been attached to to allow charging of USB C and Micro USB devices. Also an USB C to USB A adapter is added to allow the usage of not-yet-common USB C sockets.

    I’ve used this to charge my smartphone using an USB A from a car radio (5 Volt, 0.5A) and an hotel TV (5 Volt, 1A).

    Question: what USB ports of devices have you used to charge your equipment?
    Examples that come to my (computer nerd) mind: VoIP desk phones, PCs & laptops, printers, copy machines, etc.

    I’m sure there are plenty more devices with USB ports that can be used for charging … I just don’t recognize them, hence this thread :D

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