I'm working on an Aiwa HS-J10. It originally came with a rechargable battery that clipped onto the bottom of it. Or you could use a holder for 2 AAA batteries. So far I've been powering it with an external charger, but I'd like to get a battery holder for it. Are there sources besides the 3-d printed ones from China and listed on eBay? And is the holder for the J202 the same?