jrnymn7 wrote:
mena661 wrote:
Your batts are fine as is, no need to reconfigure them. There's wrong with how you're using them.
is it fair to say charging a 430ah bank will take no longer than a 215ah bank, provided the discharge in actual amp hours is the same and the charging parameters are as well? or do the larger banks simply require more charging time based solely on their larger size?
No. You are flunking school! :) Slow down and study my ugly graphs. The same AH down on the big bank leaves it at a higher SOC where acceptance rate is lower. The smaller bank will be down lower in SOC where the acceptance rate is higher.
Note that doubling the charging amps does not halve the time, but doubling the bank size with the same charging amps doubles the time.
You have to say what SOC you are starting at, say 50%. Then you pick a charging amps. Same charging amps on the small bank is a higher charging rate (percentage of bank AH) than the same charging amps on the big bank.
Where along the way in SOC you get before constant amps stop and tapering starts is all about the charging rate. Lower rate, the higher the SOC before tapering. But the higher charging rate on the same size bank is still faster because even though the amps taper sooner, they are still higher than the constant amps of the lower rate for a while until they both are the same from there on.
It seems that you have the chargers you need, but are not maybe using them to advantage because you haven't been studying my ugly graphs (which I stole from a book for the idea but plotted them from my own recharges.)
