Battery Holders / Adapter

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$18.90  
1 pc(s)
The watertight battery holder holds 3 AA batteries and has o-ring seals at both ends. It also has a universal mounting that can either strap to a pole (such as a bike frame) or screw to a flat surface.  It has 2 pairs of power leads coming from the main body and two mating connectors as...

$6.50  
13 pc(s)
Keep your power source safe with these waterproof 4xAA battery holders. The case has a rubber gasket around the edge of the case to keep out dust, dirt, and water so your batteries remain protected regardless of the weather conditions. The battery holder is secured by two latches. It...

$5.50  
15 pc(s)
Keep your power source safe with these waterproof 2xAA battery holders. The case has a rubber gasket around the edge of the case to keep out dust, dirt, and water so your batteries remain protected regardless of the weather conditions. The battery holder is secured by four screws and hexnuts....

$4.90  
6 pc(s)
Make a portable power brick with plenty of juice! Use Alkaline AA's for a 12V 3000-4000mAh power supply, or rechargeable NiMH for 2000mAh 9.6V supply. Either one is good for running electronics that have a 5V voltage regulator (thus requiring a 7V+ supply) or perhaps some motors or solenoids....

$4.90  
70 pc(s)
This is a simple cable that adapts from a USB port to a 5.5x2.1mm barrel connector, center positive. This cable allows the user to use a USB port on a computer, laptop, or on our cigarette power supply to provide our development boards with 5V. The USB specification limits current...

$4.50  
5 pc(s)
This adapter allows you to connect a barrel jack connector to bare wires. One end has screw terminals and the other has a 5.5x2.1mm, center-positive female barrel jack. If you have a power supply with a barrel jack and want to plug it into a breadboard, this might be the simple solution.

$4.50  
28 pc(s)
Add a power switch to any project simply by plugging this between the power supply. This is the most useful thing you never knew you needed! You'll want to pick up a bunch for your electronic projects. Comes with a 5.5/2.1mm barrel jack on one end an a plug on the other. In between is an...

$4.50  
71 pc(s)
This adapter allows you to connect a barrel jack connector to bare wires. One end has screw terminals and the other has a 5.5x2.1mm, center-positive male barrel jack. If you need to connect bare wires to a barrel jack on an Arduino or a development board, this might be the simple solution.

$4.20  
37 pc(s)
This is a 9V battery pack with on/off switch and terminated with a standard 5.5x2.1mm, center-positive barrel jack. Use this to battery-power your Arduino or other electronic projects. Battery & screw not included. Dimensions : 68mm x 33mm x 21mm Lead length: 12cm...

$4.20  
Out-of-stock
This 4xAA battery holder puts a nice finishing touch on your battery powered project. This holder features a removable sliding cover and an ON/OFF switch which can be used to control power to your project. The cable is terminated with a standard 5.5x2.1mm, center positive barrel jack...
Out-of-stock

$3.95  
14 pc(s)
This is a simple Battery holder for eight AA cells arranged as two back-to-back four-cell holders. The 5 inch cable is terminated with a standard 5.5x2.1mm, center positive barrel jack connector. The connector mates with the barrel jack on the Arduino Uno (among a number of other...

$3.90  
4 pc(s)
Enclosed battery holder for eight AA batteries. This holder features a lid that slides over the batteries and snaps into place to fully enclose them. It also features a switch that lets you open and close the electrical connection between the batteries and the holder’s leads. The leads are...
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