2Pcs DIY 12V 4-Slot 8 x AA Battery Holder Series Connection With Leads BATTERY HOLDER PARAMETER:Compatible Battery: AA BatteryInput Voltage (V): 12Output Voltage (V): 12,Material: plastic and metal,Battery holder size:107.8mm*31.1mm*30.92mm. BATTERY HOLDER FUNCTION:convenient storage, the battery box on the equipment, as the battery installation role, to provide equipment power supply. BATTERY HOLDER APPLICATIONS:the battery holder is for circuit boards, electric toys, digital photo frames, electronic calendar and other digital products. EXTERNAL CONNECTION: two 145mm red and black cable PACKAGE:2 x DIY 12V 4-Slot 8 x AA Battery Holder Series Connection With Leads.