[john61ct]

Ah has a nebulous connection to "performance"

All about longevity and range whether miles or hours.

Put a coulomb-counter wattmeter on a unit drive it around at higher speeds higher duty cycle and longer hours & miles than you expect.

Say it uses 80Ah in a day

Then a 120Ah bank would be minimum IMO.

if can you put in more without adding too much weight

so less capacity per day is used

then the pack will last much longer before needing replacement

maybe decades

 

[john61ct]

Well properly designed, lead banks are often big enough so their usual DoD% is around 50% for longevity.

With LFP since they can last ten times longer, people often let them get depleted to an average of 80% DoD or even all the way to say 3.1Vpc

Nameplate rating can often be less exaggerated

So LFP usually has more usable energy compared to the nameplate Ah than with lead.

Also being twice the energy density (half the weight and volume) if those factors were limiting before, the owner may choose to increase total Ah capacity.

Finally, if the weight is a lot lower, that may impact stability if the system as a whole, increase risk of car rollover, might want to restore some of that reduced weight