Lithium iron phosphate
Background (from onboarding exercises)
NCA/NCM vs LiFePO4/LFP
LiFePO4/LFP is commonly called the iron phosphate
Has a nominal voltage of 3.2V per cell
Takes 16 of these cells to make a 28V pack while NCA/NCM only require 13 to hit that voltage
Is considered the most fire safe
Last about twice as long as the common NCA/NCM 18650-cell packs
A 4S pack of LFP is the most common replacement for a 12V lead-acid battery pack (4P x 3.2V = 12.8V nominal)
NCA/NCM in the 18650 format cells have a much better selection of choices and provide high power and long-range in a small package that is affordable
LFP can be found in flat pouch cells and 26650s and large cylindrical cells (these are big)