9v Battery Snap Connector To Dc Male Power Adapter Cable For Arduino HC-05 Wireless Module consider using something like a

consider using something like a

Adapter Inlet Diameter: 22mm

11b/g/n/ac wireless LAN

6 module is ideal for battery-operated mobile devices with very strict cost and space constraints

which also provides a shutdown mode

9v Battery Snap Connector To Dc Male Power Adapter Cable For Arduino HC-05 Wireless Module consider using something like aUse 9V Battery Snap Connector to connect a 9V battery to anything with a 5. 52. 1mm plug. This Snap Connector is useful to power up development boards (like the Arduino) with a 9V battery. The cable has a molded 5. 52. 1mm plug on one end, and a 9V battery snaps on the other. The battery snap covers the battery contacts to prevent shortcircuits, and its made of plastic, so it is more durable than traditional clips. The polarity on the plug is positive