The power lithium battery you mentioned is also a polymer lithium battery, because we generally need two kinds of lithium battery products: one is a capacity battery, which is known for large capacity, and the representative is Sanyo Dahongpao (18650 can do To 1500MAH-3000MAH), etc., commonly used with small current discharge products, but with large capacity requirements, such as mobile power supplies, outdoor flashlights, etc.;