This thread could go the way of anchors, guns
, and multi vs. mono, but...
On the MPPT
bulk/absorption are the same thing, the maximum voltage at which you charge the batteries
. The remaining question is "for how long?" do you keep them at this voltage. You can either refer to Trojan or general guides, but this will also depend on your use and charging
profile (if you rarely get the batteries fully charged then you probably want a longer absorption time, if you get them fully charged every day then shorter).
For the BM, the "charged voltage" is the point at which it resets itself to 100% SOC. Lots of discussion on that subject too, but the most common would be to have this match your absorption voltage setting in the charger
. Depending on which BM there may also be Tail Current
and Charged Detection Time
settings that allow you to fine-tune the point where the BM decides the battery
is at 100% SOC.
[Edit] looks like Trojan recommends 4 hours as a maximum absorption time for that type of battery
Trojan does make a bit of a distinction between bulk and absorption, with absorption set at 14.4-14.7, so a rise to the bulk point, then a slight drop to absorption, although most controllers don't have this setting.