After more than 5 years of continuous trial production and improvement, Guangdong Lide An New Energy Co., Ltd., a wholly-owned subsidiary of Dongguan Diande Electronics Co., Ltd., has finally achieved mass production and shipment of its new invention patented product - circular steel shell lithium-ion battery. The patented battery has the characteristics of completely independently developed patents, high unit volume capacity of 5-20%, long storage resistance, and safety and reliability