My Screwy 31
First off let me say I am not stressing over this. It's just a battery, it is only money, it is meeting my overnight needs, but it is displaying strange behavior, and I am curious as to why. So th...
Forum Discussion
I'm sticking with A flooded battery for cycling, as the AGM's seem to require high currents which my Solar cannot meet, and solar is my primary recharging source, albeit the lowest and slowest I have.
I reduced overall capacity bown from two 27's, so my 200 watts of solar could at least approach the 10% rate at noon after march 21 before sept21, so I'll not be increasing capacity either with the T-1275.
Investment wise, this 31 already has outperformed 2 sets of Crowns, but they were compromised by lack of watering due to inconvenient location, and Crown recommends higher charge rates of 12 to 18% last I looked, so my solar was even less well matched on those.
It had been a while since I did a Hydrodipping, and the one low cell and wide disparity was certainly a surprise. I had done some brief 16v MW sessions just watching the amps and would just stop the EQ a bit prematurely.
It would be nice to not have to have the battery at 15.3v all afternoon long while SG slowly creeps toward the maximum. I figure 15.3v is abusive to my lighting and fans.
While the SG readings indicate the end of life ticking, I am not really Noticing this voltage wise under load. Sure it is lower than new, and seems to drop to the 12.2v fairly quickly before rallying and maintaining 12.2 while I hammer it with loads similar to the loads for the 20 hour rate.
Anyway, it has been neat beating up on this battery and concentrating more on getting SG near max as often as possible. It has proven that green flashing lights are liars, each battery is a bit different, and achieving full charge is not just to be trusted to Automatic underchargers or universal converter algorithms. It shows how important Adjustable voltage setpoints are in getting the most from a heavily cycled battery.
And it ain't dead yet.
I'll be keeping an eye on that weak sister cell. It is the easiest to dip, being closest to the (-) terminal
I reduced overall capacity bown from two 27's, so my 200 watts of solar could at least approach the 10% rate at noon after march 21 before sept21, so I'll not be increasing capacity either with the T-1275.
Investment wise, this 31 already has outperformed 2 sets of Crowns, but they were compromised by lack of watering due to inconvenient location, and Crown recommends higher charge rates of 12 to 18% last I looked, so my solar was even less well matched on those.
It had been a while since I did a Hydrodipping, and the one low cell and wide disparity was certainly a surprise. I had done some brief 16v MW sessions just watching the amps and would just stop the EQ a bit prematurely.
It would be nice to not have to have the battery at 15.3v all afternoon long while SG slowly creeps toward the maximum. I figure 15.3v is abusive to my lighting and fans.
While the SG readings indicate the end of life ticking, I am not really Noticing this voltage wise under load. Sure it is lower than new, and seems to drop to the 12.2v fairly quickly before rallying and maintaining 12.2 while I hammer it with loads similar to the loads for the 20 hour rate.
Anyway, it has been neat beating up on this battery and concentrating more on getting SG near max as often as possible. It has proven that green flashing lights are liars, each battery is a bit different, and achieving full charge is not just to be trusted to Automatic underchargers or universal converter algorithms. It shows how important Adjustable voltage setpoints are in getting the most from a heavily cycled battery.
And it ain't dead yet.
I'll be keeping an eye on that weak sister cell. It is the easiest to dip, being closest to the (-) terminal
