Cell type: polymer Li-ion; Cell output voltage: DC5V±0.2V; output current: ≤500mA（0.5A）; input voltage: 5.5V±0.5V; input current: ≤1000mA（1A）; Capacity: 1900mAh; Duration of charge: 3-6 hours; cycle life: ＞500 times; working temperature：-10℃—40℃；storage and transport Temperature：-20℃—50℃;Volume: 114x66x20mm; weight: 193g