Features:
The first time you need to install the 18650 flat head battery,then press the button on the back of the circuit board to activate the use of this product.
5.5×2.1mm port output is DC 12V,Suitable for wifi Router LED Strip Security Camera and more.
As USB mobile charger for cellphone tablet and more devices,with DC adapter,easy to use.
With overcharge, overdischarge, overload, short circuit and other protection.

Specifications:
Item Type: 18650 Li-ion Battery Charger Box
Material: metal
Color: Back
Size: 9.5×12.5×2.7cm
input: DC 12V-13V
5.5×2.1mm port output: DC 12V 3-5A
USB Output: 5V 2A

Package includes:
1 X DIY Power Bank Box(18650 batteries are not included)
1 X DC adapter