Item: No Welding DIY Detachable Power Bank CaseSize:170*84*62mmOutput: 5V-3A 9V-2A 12V-1.5A 4.5V-5A 5V-4.5AInput: 5V-3A 9V-2A 12V-1.5AWith LED LightingWireless charging power: 15WCan install 21PCS 18650 flat head batteries(Batteries not include)With LED LightingColor: black,white,green,blue,red Note: 1, The positive and negative poles need to be seen clearly before installation.2, Some power bank case supply displays "0" after the battery is installed, and needs to be charged to activate the batteryPackage Included:1* Power Bank Case (Batteries not include)Note: 1, Don't use pointed batteries. Batteries with damaged appearance are not use.It is not recommended to use the battery with high internal resistance, long storage time and many times of use.2, Only 18650 flat-head batteries can be used, and the voltage is in line with 3.2V-4.2V. You need to use brand new batteries. Old batteries and damaged batteries will cause failure to work, incorrect connection of positive and negative poles, and the first time you need to use the battery full.3, Charging power depends on your device, for example: 9V-2A, if your device supports 9V-2A, then it will automatically jump to 9V-2A, if not, it will not jump.