There's likely nothing different about them then any other AGM. I'd Google a few other AGM batteries to get a good feel of the common settings.
From memory:
20% +/- 5% of is good rule of thumb for max charging current. EG: ~20 amps per 100 AH If they aren't getting warm you can go higher.
14.4 Bulk voltage
Absorption is the same as bulk, the only difference is that you can hold it at 14.4 v with less than 20 amps per 100 Ah.
A full battery is when you can hold at 14.4 V with less then~3 amps per 100 Ah.
Since they are sealed battery I'd avoid floating charging (~13.3) them for long periods. IMHO, leaving them on a float charger for a year straight is hard on them.