Agm Battery Charge Table. A standard bulk charging rate for AGM batteries is 01C. To properly charge a body battery with the alternator you need a 12V charger or a so-called B2B charger.
The charging speed is usually 2amp or what is considered to be a trickle or float charge. Recommended charging booster for the battery via the alternator. Table-02 AGM Battery Voltages while Discharging at 01C.
The charge voltage is based on battery temperature but it uses 25 Deg C 77 Deg F as the default temperature and then has compensation tables for higher or lower temperatures.
Features of an AGM Battery Charger. At the very least an over charged AGM battery will no longer be able to hold the same amount of a charge and will be easy to discharge quickly. AGM batteries are making with a different technology than the conventional flooded one. Blended with solar you can get the bank to 85 SOC or so and let the solar take over for the long slow crawl back to 100 SOC.