I have Battle Born LiFePO4 batteries. They do not require repeated absorption. In fact, unnecessary absorption it is detrimental to all LiFePO4 batteries. Reabsorption is a lead-acid battery requirement to prevent sulfation.
I tried setting repeated absorption to "0" days, and the setting reverted to "1" day. Then I tried "999" days and found the setting reverts to "45" days. Victron forces 45 days as the maximum setting. I could set the absorption voltage to some low value, but then I would have to reconfigure the charger every time I actually wanted to charge to a higher SOC.
Repeated absorption should be set to "disabled" in the "Li-ion" factory profile (caveat: that factory profile is set at 7 days!). This looks to me to be a software oversight.
Suggestion to other users: to prevent these chargers from cooking your lithium batteries, set the tail current (disabled in the profile) to 7.5 amps (the maximum) so the charger at least diminishes the overcharging damage by terminating charging quickly (provided there are no parasite loads) of an already-fully-charged battery.