" I think you're missing the point that a LiFePo4 will stay in bulk until it is approximately 97% charged before tapering off then the adsorption phase if you use a 2 stage charger is only minutes
A FLA will go out of bulk at about 80% and take hours for adsorption."
I don't know why you would think I was missing that if you read my post.
There are a number of versions out there of just when tapering starts with an LFP where initial charging rate is 1C. Also saw where the Absorption Stage is longer with a lower charging voltage. Whatever, let's see a credible profile for that and use it.
Yes about the charging efficiency difference. Note that varies with SOC in both cases, but perhaps in different ways. IR changes with SOC.
FLA Bulk Stage lasts to a certain SOC at a particular voltage depending on the charging rate. It will go into the 90s SOC at a low rate and can start tapering at 60% SOC at a high rate. My "ugly graph" shows how that works. We have the info for a 25% charging rate close enough (AGMs almost the same as FLA)
So just because you start off at 4 x the charging rate, does not mean you will get to full in 1/4 the time. Need more info and then we could see what really happens for how much faster the LFP is.
