I have my XA2 set to charge only to certain level, and routinely after some time I would manually charge to 100% to recalibrate battery status in software.
Today while I was trying to do the latter, which consisted of a chain of actions – disable battery thresholds, charge fully, reenable them back – I spotted a neat feature, a checkbox “This time charge fully” (this is translated back to English from my native language so YWMV), which is reset after boot.