Energy B power bank comes with four wire Name: Polymer Power Bank Model: P6 PLUS Battery capacity: 20000mAh Input: DC 5V/2.1A ... Output: DC 5V/2.1A Features: Comes with four-wire OVER TEMPERATURE PROT It is forbidden to disassemble the body, there are dangerous high-voltage circuits and electronic devices; it is fortin in water and use it under damp or sun exposure:it is normal for the product to heat up ourno use nigave nes noss °C Regulators