Lithium Confusion

Itinerant1 wrote:
None that I can tell from everyday use, looking back at prior years notes and roughly same loads at low or high SOC's everything appears to be the same. I would think that it would show when using the microwave with other loads at the same time (fridge, humidifier, chargers, tv) 140-185 amp loads. If age was showing voltage would be lower now than when the cells were new and the are still the same.

IIRC, Li age by shedding material. Does that show as a gradual loss of capacity like sulphation does with lead-acid batts? Or does it just mean the batts fail suddenly at some point more like with lead acid and shedding of the positive plate?

With such low R for Li so the voltage sag under load is so much less, would you really notice any difference in loaded voltage for a 150a load between a 500AH bank of Li and a 400AH bank at 70% SOC in each case?

I am thinking (don't know) if the loaded voltage on the 500AH bank at 70% is the same as when the bank is at 50%, then there would not be any difference between the 500AH bank at 70% from the 400AH bank at 70%.

Perhaps a better way to tell loss of capacity is to time the drop in monitored SOC using the same load in each test.

Just speculating here. Not a clue what is correct.