For Lifeline batteries they can be considered "full" when accepted current at 14.4V drops to 0.5% of Ah capacity. This is 3A at 14.4V to be considered "full". HOWEVER that is how you determine when the banks are full not what current it takes to push the batteries over 15V if left charging for long periods... The batteries actual acceptance when truly "chuck full" is considerably less.

FACT: You can push 220Ah's of Lifeline batteries over 15.1V with just 0.71A when they are left being charged by an unregulated 12W solar panel.....

I have seen a number of banks destroyed by unregulated solar. Most recent was a power boat with two group 31's (Trojan SCS 225's/130Ah each) and a 20W panel... The batteries were totally cooked. Start battery, same age, under 1 year, and uncharged by the solar, was perfectly fine.... I arrived at the boat at about 2:15 PM in mid September and the stench of battery gas was outrageous. Batteries were cooking away at 15.2V....

Here is an example of the current needed to maintain 14.4V on a 400Ah bank of Trojan L16's. That is just 0.025% of the batteries Ah capacity in current to push the bank to 14.4V when "chuck full". You eventually get to chuck full with unregulated solar.......