I got this one here in the US on Lukas’ recommendation:
Nitecore New i2 Charger worked great for bringing low voltage batteries back to life. Batteries were automatically detected, and I put each one on the charger for ~30 mins to resuscitate, and put back into Reform to charge the rest of the way.
Replacement cells are also available stateside for $3/ea here:
It sounds like future firmware updates will eliminate the discharge issue by stepping into a lower power mode so hopefully we won’t have to worry about this much longer.