6 AA Battery Holder With 2.1mm x 5.5mm Connector 9V Output 2 Pack by Corpco

Great 6 AA battery holder for your Arduino project! Provides 9V output when used Alkaline batteries, 7.2V when used with rechargeable AA. These AA battery holders feature a 2.1mm x 5.5mm power plug on a 4 inch cable. The case is made from ABS plastic with nickel plated springs to hold your AA batteries in place. Each battery holder measures 3.6" x 2.3" x 0.59"( L * W * H ). AA batteries in these holders will last much longer than a standard 9V battery will when powering up electronic projects. AA batteries not included