The standard charging voltage for Lithium Ion (charging a LifePO4) is much less than the battery manufacturer recommended 28.8 ± 0.4 V. I was curious as to whether this would effect the ability of the charger to fully charge the battery. Has anyone changed the Victron settings? Does anyone recommend changing the Victron settings?
Asking for the correct charging voltage is a bit like asking for the correct cake recipe. Theres a general consensus but everyone does it a bit differently. The standard victron LiFePo profile works fine as well.
The recommended 3.6V per cell (28.8V / 8 cells) is rather high, i would not go beyond that personally.
Will a lower absorption voltage not fully charge the battery? In theory yes, but the amount of energy that the battery takes in at the very top of the voltage curve is minute. Or in other words, charging from 3.5Vpc to 3.6Vpc is only a matter of minutes.
I personally charge to 3.45Vpc absorption and 3.3Vpc float, while using the manual equlization function of the charger to go to 3.55Vpc roughly once a month. This is to allow the BMS to balance the cells, which in many BMS starts only above 3.5Vpc. Depending on how you plan to use the battery (shallow or deep discharges) you can also look into activating adaptive absorption time instead of a fixed time.
Applied to 24V this would be 27.6V absorption, 26.4V float, 28.4V manual equalisation once in a while.
This is an excellent response! I would add if you want to really learn the specifics of how these voltages work. I would suggest a YouTube channel called “The off-grid garage”. Andy does a series of experiments and demonstrations to show why and how the settings affect various things and briefly discusses various applications.