BFL13 wrote:
...
--When doing my capacity testing with Wets at the 20 hr rate,
..
Here's a bit of heresy. I don't know my SOC and my battery specs do not include any AH rating. I do not use an AH meter(fuel guage).
Ok, they are Eaton Powerware label AGMs and weigh 100.2lbs. 100lb AGMs have around 150AH ratings. I work with that. I have a PDF spec sheet but the link to the Eaton website is now broken. The spec sheet lists; 260 full discharges, 800A for 5 sec, 50A charging max, etc.
Apparently they are tel-com pulls. I have two sets; a set of 2 that I have used since 2015, and a set of 4 that I have used since 2018. The batteries are 5+ years old when I get them. The set of two are dated Oct 2009 and the set of 4 are dated Mar 2013. I believe they are UPS type.
When I bought the newer set last year, I also bought a
inverter/charger. This his has a conditioning setting similar to the Lifeline 5.5 Conditioning procedure. I used this procedure on each battery before installation in my van.
The older set of two are going into my new TT along with a 1000W/50A Magnum.
I have had 2 AGMs fail since 2009 when I switched. One was a Bass-Pro(Deka 8A24M) and the other a Optima Blue 55AH. Both would only show 10+ Volts at rest after charging. Both failed suddenly and not over a period of time like yours.
I don't mix battery types.
Did you charge yours separately or all together as one big bank?
HTH;
John
