I plan to make this x5-x6 RPI 3 A+ cluster but I am no sure what USB Charger to use. I would really prefer something with 5-6 ports. I know the spec for output are 5V/2.5A and I plan to use it in combination of an USB device that uses 5V/0.5A so that would be x5.

I get that I would need something like 15 A (3 A per port) with 75 W in total. All that said, I am not sure if the PIs really use 2.5 A because I would be just use them as proxies(in my opinion that wouldn't load it up excessively).

As for micro USB cables I thought about Volutz Equilibrium(19 AWG Power). On the last note I know it wont be cheap but I would really like to know what are your opinions about this.

  • 1
    "I am no sure what USB Charger to use" -> Don't use a USB charger: raspberrypi.stackexchange.com/a/106117/5538 Unless of course in a month you want to be yet another person asking why a brand new 5A USB C etc. charger still triggers low voltage warnings even when powering a single Pi. Or you could get lucky. Or you could do the smart thing and use an actual power supply.
    – goldilocks
    Commented Dec 13, 2019 at 16:14

2 Answers 2


If you are okay with soldering a micro-PSU would be a good option. Probably more efficient than a few wall adapters.


Your system need a lot of ampere to function. The USB charger your are searching for may not be found.Instaed you can fetch a SMPS . A good quality SMPS has the abilty to release a lot of power. Mine is 15A 5V. You can find it in near PC store.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.