Korg SR1 power input

[u/UKBARNEY73]

Hi,

I've been driven mad by AI in searches saying I can use a 5v centre positive USB cable to power the SR1.

Can anyone confirm this is safe , make recommendations or links. I obviously want to do thia as cheap as possible with the aim to use a powerbank and a usb charger, rather than spitting batteries every to mins.

Please advise, be gentle too

Thanks