Battery Holder 6 x AA 9V Output Case With DC 2.1x5.5mm Male barrel plug positive tip These battery packs are common for powering Arduino boards and other development boards because they usually provide upwards of 9V (with alkaline batteries installed) which is perfect for the onboard 5V regulators.

Specifications:

• Voltage: 9V
• Material: Plastic
• Power: 6 x 1.5V AA batteries
• Color: Black
• Net weight: 25g

Package included:

1 X Battery case with DC 2.1 power jack