This compact design battery holder offers lower cost and longer life when you need 9 volts of electricity for your project. It holds 3 AA size batteries on each side and has a pair of snap connector exactly the same as any 9-volt batteries. 9-volt battery connectors are sold separately. Made of hard plastic, it is marked for battery size and orientation.Available in wholesale and retail. Free battery connectors are available upon request with orders of 10 or more.