DFRobot 2x 18650 Battery Holder

• DFRobot Battery Holder
• Cell number: 2 (batteries are not included)
• Battery Model: 18650
• Features a DC 2.1 power jack and a standard 7.4V output

The DFRobot 2x 18650 Battery Holder has inner connection in series, DC 2.1 power jack, standard 7.4V output. You can connect Arduino directly.