Hi @anthonyp11373
As you say plenty available [https://www.google.com/search?q=galaxy+sm-810+charger&client=firefox-b-d&sca_esv=0eb7a465d1046084&sca_upv=1&ei=jupGZuvqIYmhseMP-u-E4As&ved=0ahUKEwjr6bbE-ZOGAxWJUGwGHfo3AbwQ4dUDCBA&uact=5&oq=galaxy+sm-810+charger&gs_lp=Egxnd3Mtd2l6LXNlcnAiFWdhbGF4eSBzbS04MTAgY2hhcmdlcjIIEAAYCBgNGB4yCxAAGIAEGIYDGIoFMgsQABiABBiGAxiKBTILEAAYgAQYhgMYigUyCxAAGIAEGIYDGIoFMggQABiABBiiBDIIEAAYgAQYogQyCBAAGIAEGKIEMggQABiABBiiBDIIEAAYgAQYogRIsxNQmwZY4hFwAXgBkAEAmAGMAqABlQ6qAQUwLjIuNrgBA8gBAPgBAZgCCaAC1Q7CAgoQABiwAxjWBBhHwgIIEAAYFhgKGB7CAgYQABgWGB7CAgoQABgWGAoYHhgPwgIFECEYoAGYAwCIBgGQBgiSBwUxLjAuOKAH4DE&sclient=gws-wiz-serp|online], but at least you know they're compatible.