5V 2A 2.1A POWER BANK BATTERY CHARGER MODULE 3 USB STEP UP CIRCUIT BOARD
Sepcifications
5V 2A 2.1A Power Bank Battery Charger Module 3 USB Step Up Circuit Board
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)