... 1,Capacity:2000mah~5000mAh/3.7V(lithium polymer battery)2, input voltage:5.5V>=0.5V;output voltage 5.5V>=0 ... batteries, long lifespan, and more safety.3.Auto power off, make better use of battery energy.4.Unique high-technology, provide overcharge protection ... ,etc; 5.After 72 hours aging test, the product have high performance and high stability.6.fashionable design with mini measurement , make it ...