Power / Batteries

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$1.20  
39 pc(s)
This female barrel jack plug is great for adding a common connector to the end of wires. This jack is compatible with 5.5x2.1mm barrel connectors. The outer shell unscrews to reveal solder terminals and a crimp strain relief. The outer shell has strain relief as well.

$1.20  
94 pc(s)
This barrel jack plug is great for adding a common connector to the end of our wires. This jack is compatible with 5.5mm barrel jacks that have a 2.1mm center pole diameter. The outer shell unscrews to reveal solder terminals and a crimp strain relief. The outer shell has strain relief as well.

$1.20  
21 pc(s)
DC power jack / connector. This is a common barrel-type power jack for DC wall supplies. These are compatible with our DC wall supplies and have a 5.5mm jack, with a 2.1mm center pole diameter.

$24.50  
2 pc(s)
The DE-SWADJ is the adjustable version of our SW0XX step down voltage regulators. It is designed to be the easiest possible way to add an adjustable voltage source to a new or existing project with all the efficiency benefits of switch-mode power. The DE-SWADJ is pin-compatible with the common...

$42.00  
14 pc(s)
The DE-SWADJ 3 is a larger version of our DE-SWADJ adjustable step down voltage regulator. Previously it was necessary to put multiple DE-SWADJ units in parallel to achieve ratings over 1A, which was bulky, expensive and carried with it a considerable increase in dropout voltage. The DE-SWADJ 3...

$15.00  
8 pc(s)
This hand-held crank generator produces up to 15 volts of DC electricity. The integrated PCB includes a full bridge rectifier to provide the same output polarity for either direction the hand crank is turning. In addition, other devices can be easily connected to the screw terminal.

$4.50  
2 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...

$15.50  
4 pc(s)
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...

$15.50  
3 pc(s)
The SparkFun LiPo Charger Plus is the souped-up power option in the SparkFun line of single-cell lithium polymer (LiPo) battery chargers. With this iteration, we've changed the input charge connector to USB-C and provided charge rate selection as well as optional thermal protection. Charge,...

$29.90  
2 pc(s)
The SparkFun 5V/1A LiPo Charger/Booster is a no-nonsense circuit for generating one amp from a Lithium Polymer battery at 5V. This LiPo charger is a very economical choice that is equipped with a simple booster circuit utilizing the PAM2401 IC, and includes protection diodes so you can run...

$16.00  
1 pc(s)
LiPo batteries are a great way to power your projects. They’re small, lightweight, and pack a pretty good punch for their size. Unfortunately, even the best batteries eventually run low on power and when they do it’s often unexpected (and at the worst time). Don’t be caught by...

$28.00  
7 pc(s)
This power bank has multiple USB options for charging & discharging, along with a simple capacity indicator and power button. It is a great option to provide mobile USB power for your project. A micro-B charging cable is included. Features: 10,000 mAh capacity Micro USB...

$3.50  
152 pc(s)
This mini solar panel features high efficient polycrystalline cells mounted onto a fibreglass PCB and covered with epoxy resin which protect the cells without reducing efficiency. The panel is fairly strong and lightweight, and is incredibly durable and reliable. You can connect multiple...

$4.20  
19 pc(s)
This mini solar panel features high efficient polycrystalline cells mounted onto a fibreglass PCB and covered with epoxy resin which protect the cells without reducing efficiency. The panel is fairly strong and lightweight, and is incredibly durable and reliable. You can connect multiple...

$17.90  
5 pc(s)
Need a clean energy source to power you project? Check out this high quality, high output solar panel. Each panel features high efficient monocrystalline cells in a PET plastic package which protect the cells without reducing efficiency. A 5V regulator with USB Type-A socket is integrated to the...

$13.75  
2 pc(s)
MOSFETs are awesome. They're like a switch that you flip electronically! This SparkFun MOSFET Power Controller makes it easy to switch a battery supply on and off using your favorite microcontroller. The board also has sewable pads so you can use it in e-textile projects that need more juice....

$36.50  
4 pc(s)
Negatron is a buck-boost converter that takes a positive voltage and turns it into a negative voltage that you can use with amplifier circuits and more. The output is adjustable from -1.3V to -12V. Negatron is also able to step up/step down the magnitude of the voltage. For example, you...

$6.90  
16 pc(s)
This single channel Relay Module is specially designed for low-voltage devices and works well with 3.3V power supply. It can be used to control the lighting, electrical and other equipments through the digital IO port. The module comes with on-board back EMF protection to eliminate the...

$49.50  
3 pc(s)
This 16 channels Relay Module can be used to control the lighting, electrical and other equipments through the digital IO port. The digital input circuit is optically isolated from the relay, so your controller is protected from voltage spikes and surges. The module is controlled with 5V...

$8.90  
2 pc(s)
This two channels Relay Module can be used to control the lighting, electrical and other equipments through the digital IO port. The digital input circuit is optically isolated from the relay, so your controller is protected from voltage spikes and surges. The module is controlled with 12V...

$8.90  
4 pc(s)
This two channels Relay Module can be used to control the lighting, electrical and other equipments through the digital IO port. The digital input circuit is optically isolated from the relay, so your controller is protected from voltage spikes and surges. The module is controlled with 5V...

$12.90  
5 pc(s)
This four channels Relay Module can be used to control the lighting, electrical and other equipments through the digital IO port. The digital input circuit is optically isolated from the relay, so your controller is protected from voltage spikes and surges. The module is controlled with 12V...

$12.90  
12 pc(s)
This four channels Relay Module can be used to control the lighting, electrical and other equipments through the digital IO port. The digital input circuit is optically isolated from the relay, so your controller is protected from voltage spikes and surges. The module is controlled with 5V...

$23.90  
2 pc(s)
This eight channels Relay Module can be used to control the lighting, electrical and other equipments through the digital IO port. The digital input circuit is optically isolated from the relay, so your controller is protected from voltage spikes and surges. The module is controlled with 5V...

$55.95  
2 pc(s)
This synchronous switching step-down (or buck) regulator takes an input voltage of up to 40 V and efficiently reduces it to 12V with an available output current of around 15A. Typical efficiencies of 80% to 95% along with its high current capabilities make this regulator well suited for...

$55.95  
2 pc(s)
This synchronous switching step-down (or buck) regulator takes an input voltage of up to 40 V and efficiently reduces it to 5 V with an available output current of around 15 A. Typical efficiencies of 80% to 95% along with its high current capabilities make this regulator well suited for...

$55.95  
3 pc(s)
This synchronous switching step-down (or buck) regulator takes an input voltage of up to 40 V and efficiently reduces it to 9V with an available output current of around 15 A. Typical efficiencies of 80% to 95% along with its high current capabilities make this regulator well suited for...

$16.70  
Out-of-stock
**This battery is not available to ship outside Singapore** ** This battery uses 1mm pitch JST SH Connector ** 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...
Out-of-stock

$16.70  
137 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...

$12.50  
44 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...

$14.95  
12 pc(s)
This is the official USB Type-C Power Supply for the Raspberry Pi 4 Model B. This is a wall adapter with a USB Type-C Connector that fulfills the 15.3W power requirements of the Raspberry Pi 4. It can also be used for other devices which require up to 5.1VDC and 3A. Features: AC 100-240V...

$1.20  
106 pc(s)
These are general purpose, Single Pole - Double Throw (SPDT) sealed relays. Use them to switch high voltage, and/or high current devices. This relay's coil has switch voltage of 3V at 120mA. The contacts are rated 10A at 120VAC, 10A at 30VDC. Features : 3V DC SPDT Relal Fully...

$1.20  
7 pc(s)
These are general purpose, Single Pole - Double Throw (SPDT) sealed relays. Use them to switch high voltage, and/or high current devices. This relay's coil has switch voltage of 3V at 71.4mA. The contacts are rated 10A at 240VAC. Features : 5V DC SPDT Relay Fully Sealed...

$2.70  
40 pc(s)
This tiny coin cell battery holder is ideal for small portable or wearable projects. It holds two 20mm CR2032 coin cells in series to generate 6V nominal. CR2032 tends to have about 220mAh capacity so this holder would give you 6V @ 220mAh with two cells.

$5.20  
6 pc(s)
This Single Relay Module can be used to control the lighting, electrical and other equipments through the digital IO port. Applications include solenoid valves, lamps, motors and other high current or high voltage devices. The modules are controlled with 5V signal and they are pre-soldered. A...

$37.50  
11 pc(s)
Need a clean energy source to power you project? Check out this high quality, high output solar panel. Each panel features high efficient polycrystalline cells mounted onto a fibreglass PCB and covered with epoxy resin which protect the cells without reducing efficiency. A weatherproof plastic...

$27.50  
Out-of-stock
Need a clean energy source to power you project? Check out this high quality, high output solar panel. Each panel features high efficient polycrystalline cells mounted onto a fibreglass PCB and covered with epoxy resin which protect the cells without reducing efficiency. A weatherproof plastic...
Out-of-stock

$37.50  
5 pc(s)
Need a clean energy source to power you project? Check out this high quality, high output solar panel. Each panel features high efficient polycrystalline cells mounted onto a fibreglass PCB and covered with epoxy resin which protect the cells without reducing efficiency. A weatherproof...

$37.50  
2 pc(s)
This is the Sunny Buddy, a maximum power point tracking (MPPT) solar charger for single-cell LiPo batteries. This MPPT solar charger provide you with the ability to get the most possible power out of your solar panel or other photovoltaic device and into a rechargable LiPo battery. Set-up is...

$14.50  
5 pc(s)
Solar Power Manager 5V is a small power and high-efficiency solar power management module designed for 5V solar panel. It features as MPPT (Maximum Power Point Tracking) function, maximizing the efficiency of the solar panel. Apart from serving as a solar charger, the module can provide up to...

$42.50  
4 pc(s)
The SWADJHV is the a high-voltage edition of our popular DE-SWADJ adjustable switching reulators. It is designed to accept an input voltage ranging from 5-60V, allowing you to power a variety of applications from extremely high-voltage sources. The SWADJHV is pin-compatible with the common 78XX...

$1.95  
5 pc(s)
You can use this power adapter with your appliance/equipment from USA, Canada, UK, Australia, Asia... or other countries that you want to plug into the local wall power outlet. Note : This power adapter does not contain a transformer, its not going to transform 120VAC to 220VAC or vice...

$25.95  
2 pc(s)
If you need to charge LiPo batteries, this simple charger will do just that, and do it fast! The SparkFun USB LiPo Charger is a basic charging circuit that allows you to charge 3.7V LiPo cells at a rate of 500mA or 100mA. It is designed to charge single-cell Li-Ion or Li-Polymer batteries....

$8.00  
482 pc(s)
High quality switching 'wall wart' AC to DC 9V 1A wall power supply manufactured specifically for portable electronics devices. These are switch mode power supplies which mean the output is regulated to 9V (no more 14V outputs! ) and the capable output current is much higher (1A!)....

$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....

$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...
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