Replacing a 55 amp converter with a 45?

jrnymn7 wrote:
Let's see if I understand this correctly.

V3 is higher than. V1. Subsequently, A3 is lower than A1...

??? is this a result of more pressure (v) pushing more Ah's (a) into the bank faster, and thus causing amps to taper faster? (to clarify, both start off at about the same amps, but the one tapers much more quickly).

And yes, I see that even at ~ 118 amps charge current, per the 180 Ah's needing to be replaced, amps did indeed begin to taper immediately. So yes, it stands to reason a 180 Amp charge current would taper amps well before 50% soc.

And it's finally dawning on me that I have never done a C/2 charge on my bank. The most I've ever done is about a C/5. So I wasn't even considering the effects of such a high charge rate on the time it would take for amps to taper. I mean, I knew there was some effect, but I hadn't seriously considered it within these parameters.

The next thing to consider, I guess, is whether or not amps taper fast enough to stay within that 1:1 ratio of Amps/Ah's discharged.

1/1 amps ratio is hypothetical... ask yourself, at what bulk recharge voltage is the amps used to amps replaced ratio 1/1? There will always be losses in restoring chemical reactions and returning the potential energy in the battery chemistry. There are always some loses due to resistance, although battery resistance is lowest from probably a 35% to 85 or 90% SOC. Lower than 35%, electrolyte is closer to water and makes a poor conductor, about 85%, there's not much element left in the form of sulfur, to be absorbed back into ionic state as Sulfuric acid, it takes tremendous energy and losses to get a battery back to 100% SOC. Which is why it's best done on the grid, at low voltage and low amps, something that is not a luxury for the most part, daily, while off the grid. Hence the once every 10 to 14 day EQ charge session after top off, at a full 16.0V