When selecting a portable power station, the battery chemistry is the most critical factor for longevity and safety. LiFePO4 (Lithium Iron Phosphate) is the industry gold standard for B2B procurement, offering over 3,000+ charge cycles and superior thermal stability. In contrast, NCM (Nickel Cobalt Manganese) batteries are lighter and more compact but typically offer only 500-800 cycles. For long-term commercial use or rental fleets, LiFePO4 is the most economically feasible choice despite a slightly higher initial cost.