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I have a 20V battery, which I wish to use to power a USB device. Do you think I would have any issues wiring the battery up to 2 of these DC Converer/USB modules , thereby having 4 ports working off of this 1 battery?

For a higher quality solution, how about this converter paired with this USB stack?

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  • \$\begingroup\$ If it really does 20v down to 5v then yes. \$\endgroup\$
    – Passerby
    Mar 31 '20 at 0:47
  • \$\begingroup\$ What are you going to connect to the USB ports? I wouldn't put my expensive phone on one of these cheap devices. Also, I wouldn't run these at more than 50% capacity. If they are rated at 3A, don't draw more than 1.5A. These cheap items are notorious for being under-designed. \$\endgroup\$
    – Mattman944
    Mar 31 '20 at 1:15
  • \$\begingroup\$ Yes, I would like to charge phones, bluetooth speakers, etc. Regarding amperage pull, doesn't the charging device decide what amperage to pull? I'd be happy to pay more for higher quality, but haven't found many other options. Any ideas? \$\endgroup\$
    – Allen
    Mar 31 '20 at 1:53
  • \$\begingroup\$ "I have a 20V battery" - that's an unusual voltage for a battery. Exactly which battery is it? \$\endgroup\$ Mar 31 '20 at 19:22
  • \$\begingroup\$ Dewalt tool battery. \$\endgroup\$
    – Allen
    Apr 1 '20 at 16:42

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