Power / Batteries

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$2.50  
3 pc(s)
Enclosed battery holder for four AA cells. This holder features a lid that slides over the batteries and snaps into place to fully enclose the battery. 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...

$2.95  
2 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...

$16.70  
9 pc(s)
**This battery is not available to ship outside Singapore** This is a very small, extremely lightweight battery based on Lithium Ion chemistry, with the highest energy density currently in production. Each cell outputs a nominal 3.7V at 400mAh! Comes terminated with a standard 2-pin...

$0.90 $1.80  
75 pc(s)
This 9V Snap to 2.1mm Barrel Jack Adapter provides the ability to conveniently use a 9V battery to power many common boards and modules such as the popular Arduino and compatible microcontrollers. This plug is a common barrel type with an outside diameter of 5.5mm and an inside diameter of...

$0.50  
94 pc(s)
Classis 9V snap connectors with color-coded wire leads. Great for replacements or projects. Length: ~ 15cm

$0.80  
6 pc(s)
This 9V battery holder allows your battery to snap in tight and holds it in place, which is great in situations where you don't want the battery just hanging. It also has three mounting holes so you can attach it securely to your enclosure. It is terminated with a 150mm leads

$2.50  
4 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.

$2.50  
36 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.

$15.95  
Out-of-stock
If you need to charge LiPo batteries, this simple charger will do just that, and do it fast! The LiPo Charger Basic is stripped down of all features and just does one thing well - charge 3.7V LiPo cells at a rate of 500mA per hour. It is designed to charge single-cell Li-Ion or Li-Polymer...
Out-of-stock

$1.20 $1.50  
36 pc(s)
This is a simple 4 cell AA battery holder. 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 products) allowing you to easily make your project...

$1.90  
29 pc(s)
This 2xAA battery holder puts a nice finishing touch on your battery powered project. This holder features a removable, sliding cover, which is secured with a small phillips head screw. Another bonus is the ON/OFF switch which can be used to control power to your project. The leads are about...

$1.90  
14 pc(s)
Enclosed battery holder for two AA cells. This holder features a lid that slides over the batteries and snaps into place to fully enclose the cells. 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 about...
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