Advances in gerontology = Uspekhi gerontologii , 27 (4), 699703
1 Battery chemistry Different chemistries support different current densities: LiFePO (LFP): Moderate energy density, good thermal stability, typically lower C than LiPo LiPo / High-power Li-ion: Optimized for high discharge (RC, drones) NMC / NCA: Balanced energy and power (used in EVs) For example, EV batteries from manufacturers like Tesla prioritize energy density and longevity over extreme C rates
Together, they deliver a smoother, firmer, and more youthful look--without surgery and with little to no downtime
They are designed entirely for different classifications of substances
A more mundane explanation is that hot water evaporates faster than cold, decreasing its volume and thus the time it takes to freeze
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