Hello. I use a SmartSolar MPPT 100/20 (48V model) on a (partly sulfated) 12V AGM battery, with VictronConnect's AGM spiral cell preset (i.e. 6h max, adaptive duration absorption, and a 1A tail current that has never been reached). Firmware is 1.59.
With 12.4V-12.5V in the morning, absorption lasts 1h-1h6m when it should last 2h (1/3 of max duration). I chalked it up to an unstated gradient of the applied factor. However, this morning, my battery was sitting at 12.71V but the absorption phase lasted 2h19m. Any thoughts on this?
