Power

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Lithium Ion Battery - 18650 Cell (2600mAh)

In stock PRT-12895

No, these aren't some sort of weird, AA battery, this is actually a 18650 Lithium Ion Cell. These round high capacity cells h…

$5.95

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N-Channel MOSFET 60V 30A

In stock COM-10213

If you've ever wondered how to control the headlight of a car from a microcontroller, a MOSFET is what you need. This is a ve…

$0.95

Favorited Favorite 43

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SparkFun LiPo Fuel Gauge

Only 6 left! TOL-10617

LiPo batteries are a great way to power your projects. They're small, lightweight, and pack a pretty good punch for their siz…

$10.95

Favorited Favorite 22

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Battery Holder - 2xAA (JST-PH)

In stock PRT-14299

This is a unique two-cell AA battery holde. The 6" (~150mm) cable has been terminated with a JST-PH connector.

$1.50

Favorited Favorite 19

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Battery Holder - 2x18650 (wire leads)

In stock PRT-12900

This is an incredibly simple two cell 18650 Battery Holder. When someone thinks of 18650 Cells they tend to think of flashlig…

$1.50

Favorited Favorite 15

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Wall Adapter Power Supply - 5VDC, 2A (USB Micro-B)

In stock TOL-15311

This is a high quality switching 'wall wart' AC to DC 5V 2000mA USB Micro-B wall power supply manufactured specifically for S…

$5.95

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SkyRC IMAX B6 V2 Professional Balance Charger / Discharger

In stock PRT-16793

The SkyRC B6 V2 is a DC input high-performance, micro-processor controlled charge/discharge/DC/DC converter with battery mana…

$34.95

Favorited Favorite 1

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Raspberry Pi Wall Adapter Power Supply - 5.1VDC, 3.0A, 15.3W (USB-C)

25 available TOL-15448

The is the official USB Type-C Power Supply for the Raspberry Pi Model 4 B.

$8.00

Favorited Favorite 7

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SparkFun Benchtop Power Board Kit

Out of stock KIT-12867

You don’t have the power? Well, there’s no need to ask Scotty – the SparkFun Benchtop Power Board Kit has your back. Th…

$21.95

Favorited Favorite 52

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Solar Panel Charger - 10W

Only 14 left! PRT-16835

This is a portable, slim, lightweight solar panel charger with 10 watts of power and a standard USB connection port.

$18.95

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Voltage Regulator - 5V

In stock COM-00107

This is the basic L7805 voltage regulator, a three-terminal positive regulator with a 5V fixed output voltage. This fixed reg…

$0.95

Favorited Favorite 40

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SparkFun Variable Load Kit

Only 9 left! KIT-14449

The SparkFun Variable Load is a quick to assemble kit that has been designed to allow users to draw a specific amount of curr…

$35.95

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SparkFun ATX Power Connector Breakout Kit - 12V/5V (4-pin)

25 available KIT-15701

The ATX power connector breaks out the standard 4-pin computer peripheral port for you 12V & 5V devices from one wall adapter…

$14.95

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Solar Panel - 9W

Out of stock PRT-13784

Have a project that needs some good power? Do you like free power provided by our friend, Mr. Sun? Check out this high qualit…

$79.00

Favorited Favorite 19

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Solar Panel - 2W

In stock PRT-13781

Have a project that needs some good power? Do you like free power provided by our friend, Mr. Sun? Check out this high qualit…

$29.00

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SparkFun MOSFET Power Controller

In stock PRT-11214

MOSFETs are awesome. They're like a switch that you flip electronically! This SparkFun MOSFET Power Controller makes it easy …

$8.95

Favorited Favorite 21

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Voltage Regulator - 3.3V

In stock COM-00526

This is the basic LD1117V33 voltage regulator, a low drop positive regulator with a 3.3V fixed output voltage. This fixed reg…

$1.95

Favorited Favorite 34

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Polymer Lithium Ion Battery - 40mAh

In stock PRT-13852

This is an extremely tiny and light weight battery based on the new Polymer Lithium Ion chemistry. This is the highest energy…

$4.50

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Battery Holder - 1x18650 (wire leads)

In stock PRT-12899

This is an incredibly simple one cell 18650 Battery Holder. When someone thinks of 18650 Cells they tend to think of flashlig…

$1.00

Favorited Favorite 12

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Battery Holder 2xAA with Cover and Switch

In stock PRT-09547

This 2xAA battery holder puts a nice finishing touch on your battery powered project. This holder features a removable, slidi…

$1.50

Favorited Favorite 14

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9V Battery Holder

In stock PRT-10512

This 9V battery holder allows your battery to snap in tight and holds it in place, which is great in situations where you don…

$2.95

Favorited Favorite 20

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Barrel Jack Power Switch - M-F (3")

In stock COM-11705

We use barrel jacks a lot around here and sometimes we need to pop a switch into the mix. That usually means hacking up a per…

$2.50

Favorited Favorite 23

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Barrel Jack Adapter - USB to 5.5mm

In stock TOL-08639

This is a simple cable that adapts from a USB port to a 5.5x2.1mm barrel connector, center positive. This cable allows the us…

$3.25

Favorited Favorite 16

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Panasonic Alkaline Battery - AA

In stock PRT-15201

These are your standard 1.5V AA alkaline batteries from Panasonic.

$0.50

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Low Current Lithium Ion Battery Pack - 2.5Ah (USB)

In stock TOL-15204

We've taken the classic, portable, rechargeable lithium ion battery pack and tweaked the design to make it amenable to low cu…

$9.95

Favorited Favorite 7

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Coin Cell Battery - 12mm (CR1225)

In stock PRT-00337

CR1225 lithium metal 3V 12mm 47mAh coin cell batteries. Perfect small battery for miniature sensor node applications. Thes…

$1.95

Favorited Favorite 13

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SparkFun Breadboard Power Supply Stick - 3.3V/1.8V

23 available PRT-13157

This is a very simple board that takes a 4-9V input voltage and outputs a selectable 1.8V or 3.3V regulated voltage. All head…

$16.95

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SparkFun LiPo Charger Basic - Mini-USB

Only 12 left! PRT-10401

If you need to charge LiPo batteries, this simple charger will do just that. It is designed to charge single-cell Li-Ion or L…

$8.95

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Solar Panel - 6W

19 available PRT-13783

Have a project that needs some good power? Do you like free power provided by our friend, Mr. Sun? Check out this high qualit…

$59.00

Favorited Favorite 8

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KR Sense Current and Voltage Sensor - 90A

30 available SEN-16408

The KR Sense 90A is a small voltage and current sense breakout board.

$19.95

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micro:bit Battery Holder - 2xAAA (JST-PH)

In stock PRT-15101

This is a unique two-cell AAA battery holder built specifically for the BBC micro:bit. The 6" (~150mm) cable has been termina…

$1.95

Favorited Favorite 6

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Coin Cell Battery Holder - 2xCR2032 (Enclosed)

In stock PRT-12618

This is a simple coin cell battery holder that can enclose two CR2032 batteries inside itself, and safely kept closed via two…

$1.95

Favorited Favorite 16

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SparkFun DC/DC Converter Breakout

Only 1 left! BOB-09370

This is a breakout board for our non-isolated, [6A DC-to-DC Converter Module](http://www.sparkfun.com/commerce/product_info.p…

$29.95

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Battery Holder - 2xAAA with Cover and Switch

In stock PRT-14219

This 2xAAA battery holder puts a nice finishing touch on your battery-powered project. This holder features a sliding, remova…

$1.50

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Battery Holder - 4xAA Square

In stock PRT-00552

Simple 4 Cell AA Battery holder with 5" tinned leads, square configuration.

$1.95

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KR Sense Current and Voltage Sensor - 45A

In stock SEN-16407

The KR Sense 45A is a small voltage and current sense breakout board.

$19.95

Favorited Favorite 1

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Barrel Jack Extension Cable - M-F (6 ft)

In stock COM-11707

Do you fear that your power may not be "far reaching" enough? How would another 6' work for you? Okay, so it doesn't sound ve…

$1.95

Favorited Favorite 9

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9V Snap Connector

In stock PRT-00091

Classic 9V snap connector terminated with 2-pin polarized Molex connector with 0.1" spacing. The cable is 26AWG and is 5" in …

$1.25

Favorited Favorite 15

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Lithium Ion Battery - 2200mAh 7.4v

In stock PRT-11856

This high discharge LiPo is a great way to power any R/C, robotic, or portable project. This is an excellent choice for anyth…

$15.95

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Battery Holder 2xAA with Cover and Switch - JST Connector

In stock PRT-09925

This 2xAA battery holder puts a nice finishing touch on your battery powered project. This holder features a removable, slidi…

$1.50

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USB Car Charger - 5V, 2.4A

In stock TOL-16886

This is a cost effective 5V, 2.4A dual USB Output Car Charger with Smart IC.

$2.95

Favorited Favorite 0

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Tenergy T4s Intelligent Universal Charger - 4-Bay

In stock TOL-14457

The 4-Bay T4s Intelligent Universal Charger from Tenergy is an automatic smart charger compatible with almost all types of re…

$29.95

Favorited Favorite 6

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9V Alkaline Battery

In stock PRT-10218

These are your standard 9 Volt alkaline batteries from Rayovac. Don't even think about trying to recharge these. Use them wit…

$1.95

Favorited Favorite 5

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Battery Holder 4xAA with Cover and Switch

In stock PRT-12083

This 4xAA battery holder puts a nice finishing touch on your battery powered project. This holder features a removable, slidi…

$1.95

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Voltage Regulator - Adjustable

20 available COM-00527

This is the LM317TG voltage regulator, a three-terminal positive regulator with a 1.2V to 37V adjustable output voltage. This…

$1.95

Favorited Favorite 29

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Coin Cell Battery Holder - 20mm (PTH)

In stock PRT-00783

Basic 20mm coin cell holder. Posts can be inserted into 0.1" perf board! Holds the common CR2032 type batteries.

$1.50

Favorited Favorite 7

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Miniature Solar Cell - BPW34

In stock PRT-09541

The BPW34 is a tiny, general purpose [PiN photodiode](http://en.wikipedia.org/wiki/PIN_diode). This photodiode has a ton of u…

$1.50

Favorited Favorite 29