The issue of running down the CMOS battery is well documented, and I believe there are hardware-level alterations in their second revision that avoid it, both f

The issue of running down the CMOS battery is well documented, and I believe there are hardware-level alterations in their second revision that avoid it, both from Intel and from Framework altering their internals so the main battery can keep the CMOS battery charged. My understanding of that problem is that it's not fatal or permanent: it's a "remove the battery and clear the CMOS" kind of situation that's required to get things working again. A case where it was really permanently unable to charge or operate and was within the warranty period, I don't know how a replacement/refund would be avoidable in that case.