Its a pity that it still require such an amount of work. My Battery is dying from 18% to 61% Degradation in the last days if i can trust the BMS (Usage App from Storeman). You know theres this weird Battery-Level-Stall on this Port, my hope is that a newer kernel fix it. I have received a new Battery from Sony, sadly produced 20W47, so week 47 (End November) of 2020. Our Sony-Sparepart-Dealer told me Sony has stopped Battery production for the xz2 compact. I had ordered the C2 already but like my xz2 compact too much to let it go.
That Battery had far more Charge-Cycles like 86, but maybe not completely (0%-100% and 100%->0%)