18650 lithium batteries can burn or explode if stored at too high a temperature.
18650 lithium battery overcharge temperature range: 0℃-+60℃, charging temperature: 0℃-+45℃, operating temperature: -20℃-50℃, the best Working temperature is 20℃-40. ℃.
60 degrees is the temperature that guarantees battery life. High temperatures will shorten battery life. Only temperatures above 100 degrees will be dangerous. Generally 140 degrees will burn or explode.
Detailed information:
Common 18650 batterieshave divided into lithium-ion batteries and lithium iron phosphate batteries. The rated voltage of lithium ion battery is 3.7V, the charging cutoff voltage is 4.2V, the rated voltage of lithium iron phosphate battery is 3.2V, the cutoff voltage charging is 3.6V, capacity is generally 1200mAh. 3350 mAh, common capacity is 2200 mAh-2600 mAh.
The theoretical battery life of the 18650 is 1,000 charge cycles. Due to their large capacity per unit density, most of them are used in laptop batteries. In addition, because 18650 has very good work stability, it is widely used in various major electronic fields: often used in high-end, portable, bright flashlights. Power supplies, wireless data transmitters, electric thermal clothing and footwear, portable instruments, portable lighting equipmentes, portable printers, industrial instruments, medical instruments, etc.
Baidu Encyclopedia-18650 Lithium Battery
18650 Lithium Battery Working Temperature Range
Overcharge Temperature Range: 0 ℃—+60℃, charging temperature: 0℃-+45℃, operating temperature: -20℃-50℃, the best operating temperature is 20℃-40℃, 60℃ is the temperature to ensure the duration battery life, high temperature will shorten the lifespan, only if it is above 100℃ Dangerous, usually it will burn or explode at 140 degrees Celsius.