Battery Type: high-performance lithium polymer battery

Rated Capacity: 10000 mAh, 237 Wh

Nominal Voltage: 23.7V

Charging Working Temperature: -4° F to 113° F (-20ºC to 45ºC) 
When the temperature is lower than 41° 
F (5° C), the self-heating function will be 
automatically activated. There should be 
at least around 10% of the remaining 
power for heating.)