I found this one: https://nl.grandado.com/products/hsabat-2300mah-batterij-voor-onkyo-dp-x1-xdp-300r-100r-speler-accumulator-5-draad?variant=33205089304629

I assume that this does not defer to the xdp-100r. That's the one I have.

Hello, very interesting answer this. I would like to replace my battery with a stronger one. Any suggestions? And to know how I will do that. Would you be so kind to give me a short workaround? I would be very grateful. Thank you. Remco (Netherlands)