ITEM NAME:Hot 1PCs 5V 3.7V Li-ion 18650 Lithium Lipo Battery Charging Module Board Descriptio n Description Charging input: 5V1A Input interface: micro USB master port Discharge output: 5V1A Output interface: standard USB master port Indicator light: charge - red full - green load - blue Specifications: Material: PCB Color: picture color Size: 50 * * 10 20 mm Product list : 1pcs* mobile power module Applicable battery: polymer lithium battery, 18650 lithium battery, mobile phone battery and other 3.7v battery, can be a single power supply, or multiple parallel power supply.(do not use dry battery, battery, 12V rechargeable battery, nickel metal hydride battery, iron lithium polymer lithium battery, not multi-section series use) Support for devices like the iphone that need to be identified for charging or need to be.Input interface: micro USB master port. Output interface: standard USB master port. Charging input: 5V1A. We want to make sure you are happy with our item. Goods without RMA number will NOT be accepted.