Battery University seems to be having problems--I get "overloaded" error.
It was BU-409 if you Google for that and if you can get it.
Wait till you see the article whenever if gets back on before insisting on the 97% idea. You also have the second quote about 60%. No reason to think that person is a liar.
Even with the 60% end of Bulk at 1C, the times came out as shown, so there's that. The long absorption time after the 60% is still fairly short so you can see where the time-savings occur if you look.
If you compare charging efficiencies then use 99% for LFP as the BU article says and use 94% for the FLA like Bogart does for the Trimetric monitor (Bogart explains how they got that number in their user's manual.
That means a 5% time saving average for the LFP along 0-100 from charging efficiency.
What is missing from the BU I think, is the wiring and BMS on the LFP cells, which add R and could increase "LFP" times. No idea how much that would be. That BB tester guy mentioned that and said some have better wiring than others. Something for a roll-your-own guy to consider perhaps.
