HuaYang 2 Pcs 4X 1.5V AA Battery Holder Box Case & Lead for DIY Experiment Test Cascade(Black) Support 4pcs of AA battery to make 1.5V(battery is not included) Battery Type: 4X 1.5V AA Size: Perfect fit Takes 4 standard size AA batteries side by side to form a compact battery of 1.5V using alkaline batteries,or 1.5V using NiCd / NiMH rechargeables Quantity: 2 Pcs