This series of battery cells is primarily designed for various wireless portable electronic products or devices used in environments with a wide temperature range (i.e., large temperature differences), such as dashcams, tire pressure monitors, heating/cooling/ temperature control devices, cold injection-molded products, equipment for outdoor work, exploration, law enforcement, and driving, solar lighting, GPS devices, and outdoor monitoring instruments.
Most cells in this series are compatible with standard digital-type, high-temperature-type, and low-temperature-type cells of corresponding models, and offer more stable performance under normal temperature conditions.
warnings: This product is a semi-finished product of the factory, without any protective measures, need to be processed and assembled before use, non-professionals please do not unauthorized processing and assembly.

Electrical Characteristics: 
Charging Current: Standard ~0.1C/Fast ~0.2C
Charging time: 0.1C*15hrs(standard)/0.2C*7.5hrs(fast)
Standard charging method: 0.1C constant current (CC) charging to 4.2V, then 4.2V constant voltage (CV) charging to current less than 0.01C
Discharge cut-off voltage*: 2.75V
Minimum storage voltage: 3.7V, otherwise it should be charged in time.

temperature characteristic::
Charge: 10~45℃ Discharge:-20~80℃    Storage: 0~25℃(4 hours at -20 or 80°C limit)
Relative humidity: 45~85%