Power energy storage cylindrical battery competition

What is the maximum packing efficiency of a cylindrical battery?

While cylindrical cells have excellent structural integrity, their maximum theoretical packing efficiency is 90 percent, compared to the 100 percent achievable with prismatic designs like BYD's Blade battery. This difference affects the overall volumetric efficiency of battery packs constructed with these respective cell types.

How long does a BYD battery last?

LFP batteries typically offer longer cycle life, with BYD claiming up to 4,000 cycles for their cells. The chemistry also exhibits a lower degradation rate over time compared to NMC batteries. In practical terms, this means a BYD battery will likely retain more of its storage capacity after 8-9 years of use than a comparable NMC battery.

Which battery has more energy density – NMC or BYD?

Tesla's NMC-based 4680 cells demonstrate substantially higher energy density at 241 Wh/kg and 643 Wh/l, compared to BYD's LFP Blade battery at 160 Wh/kg and 355 Wh/l. This translates to approximately 33 percent greater energy density for Tesla's battery at a similar weight.