YUNAWU5V 2.1A 3 USB Power Bank Battery Charger Module Circuit Board Step Up Boost DIY

Apply Battery Type: 18650 battery(not include) Output Voltage: 5V 2.1A Input Voltage: 5V 1A Instructions: Level 4 Capacity indicator Lighting: with LED lights Rated Voltage: 3.7V ( Suit for 3.2V-4.2V. The batteries are in parallel) Specifications: Material: Electronic components Size: 62×18×8mm/2.44×0.71×0.31in Quantity: 1 PC Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: (No retail package)