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You can also use a USB to DC 5.5mm x 2.1mm cable connected to a decent power supply to make it really portable.
I use these connected to an old Anker 2 USB charger that delivers 2.4A per plug.
Onite 20AWG USB to DC 5.5x2.1mm Barrel Jack Center Pin Positive Power Cable Charger Cord for LED Strip, 3.3ft, 2-Pack [link]
looks like a standard 5.5x2.1mm barrel jack, with center positive. something like this should work
or if you want to plug into the wall:
It's not a controller - but these cables might work to make the controller powered via USB
I use a USB phone charger and a 5.5x2.1mm barrel plug adapter. As long as the charger can output at least 1 amp, it should be fine.
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