This is a rechargeable 3.7V lithium -ion battery with a model of 26650. When a large capacity is 6000 mAh, the circulation is charged by more than 1,000 times. Adopt high -strength stainless steel shells, explosion -proof design. Adopt intelligent stabilization stream design to meet the needs of different electrical appliances 1: Do not reverse the positive and negative poles of the battery, disassemble it, or put it together with metal objects such as keys. 2: When the battery is about to run out, please charge it as soon as possible, otherwise the battery will be scrapped, and the battery should be charged and discharged at least once a month if it is idle. 3: Please place the battery in a dry room temperature environment, do not place it where children can reach. 4: If the battery leaks, please clean the contaminated skin and clothes with clean water in time. If the situation is serious, please seek medical attention in time. 5: Please use a qualified charger for charging. 6: Keep away from heat sources, fire sources, and do not modify batteries. 7: The battery cannot be overcharged or overdischarged during use. 8: Danger can occur if the instructions are not followed.