21700 LFP cylindrical lithium iron phosphate cell, nominal 3.2V, outstanding thermal stability and long cycle life. Designed for energy‑storage systems and e‑mobility projects. Perfect for home solar storage, portable power stations, e‑bikes, low‑speed electric vehicles and off‑grid power solutions. Support series & parallel assembly. Available Grade‑A cells, with UN38.3, CE, RoHS compliance.