1. Multiple intelligent protections to effectively ensure charging safety: short circuit, temperature, reset, overvoltage, overcharge, overdischarge, overcurrent, overpower, anti-reverse 
2. 3 interface outputs, can charge 3 devices at the same time. 
3. Using high-density lithium polymer, large capacity and long battery life. 
4. Intelligent power light display, which can observe the remaining power in real time. 
5. Parameters: 
Battery capacity: 20000mAh 
Output: 5V 1A, 5V 2.1A 
Input: 5V 2.0A 
Dimensions: 146 x 69 x 28mm 
Weight: 405g