SHENZHEN M&LAK INDUSTRY CO., LTD., under the hard development of scientific research personnel, have developed a new model for TWS bluetooth headset industry battery LIR1240, LIR1154, LIR1054, LIR1240 battery 12 mm thickness of 4.0 mm diameter, LIR1154 batteries 11 mm thickness of 5.4 mm diameter, LIR1054 battery 10 mm thickness of 5.4 mm in diameter, although battery small and thin, but the capacity is enough, LIR1240 can reach 40 mah, LIR1154 can reach 50 mah,LIR1054 can reach 42 mah and discharge 2C.Good performance, better safety, further improvement in the structure, so that the sealing performance and impact resistance performance better, battery specifications have been updated to the official website.At present, it has the capacity of mass production for the wide selection of TWS bluetooth headset solutions.