Mex's Flash?
Does "Flash charging" mean we (some of us anyway) are wrong to hate it when the PowerMax or Iota converters drop their voltages so soon for the absorption stage? In another thread Mex says, "A flas...
Forum Discussion
Reviewing the last 50-90 I did camping in October, I don't see where I can apply the Flash procedure anyway. Here is a quick look (without an ugly graph)
Bank of four 6s, temp 9C/48F, estimated Bank size at the time approx. 400AH. Charging amps going in 155a set at 15v (=14.8 at that temp) Bank down 192AH at start = 52% SOC
Time, amps, battV, AH replaced according to Trimetric ( including using its heat factor) Note- only one decimal place V makes it choppy.
0900, 155, 14.0, -
0915, 141, 14.2, -
0930, 117, 14.3/4, 77
0945, 99, 14.4,-
1000, 69, 14.4, 117
1033, 42, 14.5, -
1100, 27, 14.6, 159 (if 159 is 40% then 100% is 398AH) so in ballpark for estimated bank size.
Ok, so the thing is, battery voltage only got up to near 14.7 when charger voltage was 15, at the end of the two hours at about 90% SOC.
So when would I have seen the bubbles and lowered the charger voltage?
I would have to trust my home testing results as my "marker" for whether I got a 50-90 done or not instead of the Tri if I wanted to treat the batts better without so much gassing. (On the Tri it would look like I didn't get as many AH in during the 2 hours)
As it is I don't know how much bubbling I was getting in that recharge, so it might not be so bad anyway. Have to check for bubbles next time.
Bank of four 6s, temp 9C/48F, estimated Bank size at the time approx. 400AH. Charging amps going in 155a set at 15v (=14.8 at that temp) Bank down 192AH at start = 52% SOC
Time, amps, battV, AH replaced according to Trimetric ( including using its heat factor) Note- only one decimal place V makes it choppy.
0900, 155, 14.0, -
0915, 141, 14.2, -
0930, 117, 14.3/4, 77
0945, 99, 14.4,-
1000, 69, 14.4, 117
1033, 42, 14.5, -
1100, 27, 14.6, 159 (if 159 is 40% then 100% is 398AH) so in ballpark for estimated bank size.
Ok, so the thing is, battery voltage only got up to near 14.7 when charger voltage was 15, at the end of the two hours at about 90% SOC.
So when would I have seen the bubbles and lowered the charger voltage?
I would have to trust my home testing results as my "marker" for whether I got a 50-90 done or not instead of the Tri if I wanted to treat the batts better without so much gassing. (On the Tri it would look like I didn't get as many AH in during the 2 hours)
As it is I don't know how much bubbling I was getting in that recharge, so it might not be so bad anyway. Have to check for bubbles next time.
