I've one battery that sat on the Ctek US7002 for 8 hours yesterday, to 14.4V. Let it sit overnight, took a Voltage reading this morning, 12.76V. Battery 2 charged over night also, 10:30pm to 6:30 AM, will let it sit all day, and see what I get for a voltage reading for it sometime this afternoon.
I looked inside after 8 hours of charging, all cells, no smoke coming off of them, just the tiniest of bubbles, .4 or .5mm or less in diameter, streaming up very slowly to the surface of the electrolyte.
I have to figure out how I am going to meet Trojans charging specs to get it charged at 14.8V, not 14.4, to get them truly topped off and at 100% charge. Is it really necessary, as Mena661 says to get these to 14.8 with a 10 amp + charger, to really get them to work right?
Trojan Battery manual as here says 15.5 Volts to Equalize charge these batteries, at 1 to 3% of the C/20 rating, 1.5 to 4.5 amps for a T1275. Yikes! Don't do that while hooked up to electrical on your RV. Disconnect completely.
Trojan battery Users GuideHigh antimony deep cycle batteries are kind of a different beast than automotive batteries in their charging requirements.