The first time you need to install the 18650 battery,then use 12V 5.5×2.1mm charger to activate output.
Fast Charging: With a quick QC 3.0 USB port, it enables you to get a quick top off on your QC 3.0-enabled mobile phones.
5.5×2.1mm port output is DC 12V,Suitable for wifi Router LED Strip CCTV Camera and more.
As USB charger for Cellphone Tablet and more devices,with DC adapter,easy to use.
With overcharge, overdischarge, overload, short circuit and other protection.
Item Type: 18650 Li-ion Battery Charger Box
input: DC 12.6V
5.5×2.1mm port output: DC 12V 3A
USB Output: 5V 3A,9V 2A,12V 1.5A
1 X DIY Power Bank Box(18650 batteries are not included)
1 X DC adapter