DC 9 Volt 9V SNAP ON BATTERY CLIP CONNECTOR I Type (i) Choose Quantity 1-20 pcs | eBay
Alkaline 9V Battery : ID 1321 : $1.50 : Adafruit Industries, Unique & fun DIY electronics and kits
How to Connect a DC Motor to 9V Battery with On/Off Switch - Very Easy - YouTube
9v Battery cap with DC jack plug – MECHATRONX | Electronics Store
9V Battery Connector with Plug
Energizer Recharge Universal Rechargeable 9V Batteries, 1 Pack - For Multipurpose - Battery Rechargeable - 9V - 9 V DC - 150 mAh - Nickel Metal Hydride (NiMH) - 1 Each - Office Supply Hut