ITEM NAME:Step Up Module 5V 1A Power Bank Charger Board For Mobile Phone 18650 DIYSE Descriptionï ¼Å¡ 1.Aplly Battery Type:18650 battery(not include)The batteries should be connected in parallel 2.Output Voltage:5V 1A 3.Input Voltage:3.2V-4.2V NOTE: Different batches of circuit boards differ, but guarantee quality, have the same performance. Please contact the seller if you need a specific type. Different batches of BAT + and BAT- location are different. If there are special requirements, please confirm before purchase Package includeï ¼Å¡ 1 pcs.Aplly Battery Type:18650 battery(not include)The batteries should be connected in parallel.