.Meet the relevant national standards and requirements for batteries .All finished battery products are calibrated and tested before delivery. They can be used directly and normally.The batteries we produce include polymer, cylindrical lithium batteries, power lithium batteries, smart lithium batteries, lithium iron phosphate batteries, etc. The thickness of the polymer lithium battery can be customized within 1~10mm, the width can be customized within 8~100mm, and the length can be customized 10~150mm. The combination of small polymer lithium batteries is recommended to be 4S4P and below; The common capacity of a single 18650 is 2200/2600/3000/3200/3400/3500mAh, and the common combinations are mainly 1~13S and 1~100p; 8650 batteries are divided into low, medium and high magnification (2C 5C 15C) The common communication modes of smart lithium batteries are SUMBUS, I2C, and 485. The voltage, capacity, temperature, number of cycles, and other data of the battery can be read through the device; The operating temperature range of high temperature lithium battery is ~20~+85℃, the common ones are square and cylindrical, and the operating temperature range of low temperature lithium battery is ~40~+60℃, and the common ones are square and cylindrical; 