Product: Ardest 9V Battery Clip with 2.1 x 5.5 mm Male DC Power Plug Center-Positive Barrel Jack for Arduino（Pack of 5）
Brand: Ardest
Color: red
This adapter cord enables you to quickly power your electronic projects, which come with a DC jack. The tip positive 2.1 x 5.5 mm DC plug will replace your power adapter for true portable use.
 In other words, many amp boards, and other small project boards, have a tip positive 2.1 x 5.5 mm DC power receptacle. If you don't have an AC/DC power adapter you could solder together a 9 volt battery clip to a DC plug for battery power.
 Highlights:
 Plugs into common tip positive 2.1 x 5.5 mm jacks
 9 volt clip can plug into a 9 volt battery or battery packs with the same clip
 Plastic ring protects positive terminal from accidental ground connections 
 Product Details: 9V Battery Clip to DC Plug 2.1 x 5.5 mm Tip Positive 5" Adapter Cord 
 Plug Type: 2.1 x 5.5mm Male to 9V Battery Clip
 Material(External): Plastic
 Color: Black, Red; Weight: 10g
 Cable Length: 12cm/4.7''
 Feature: T-type Connector;
 Buckle Size: 26 x 19 x 5mm/1" x 0.75" x 0.2"
 Note: Battery packs with 9 volt clips come in a variety of voltages. So if your product requires 12 volts DC you can get a battery pack that holds eight AA batteries. The more amps your product uses the faster the batteries will run down. Rechargeable batteries work great for this situation because you don't have to through them away when they run down. 
Caution: Make sure you DC jack is tip positive. Electronics that draw more than 2 amps can overheat AA batteries.

Use this cable to battery-power any device that needs 9V and has an on-board barrel jack - it works great for Arduinos, development boards, evaluation boards, and more!
This adapter cord eliminates the need for solder so you can quickly make your project truly portable with 2.1 x 5.5 mm DC jack.
This 9V battery clip also works great for premade electronics. It allows to easily add 9V DC supply to your circuit and can be used for projects where circuit boards are to be placed away from your bench top power supply.
This battery connector is prefect for Arduino Uno, Arduino Due, Arduino Mega 2560 and Arduino Ethernet Shield.
Aplly for servo controller. One side is 9V T-Type snap, other is dc 2.1 plug

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