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Power / Batteries


Solar Cell Small 0.45W

SKU: PWD-00196

$21.60
Sparkfun Electronics
Packaged solar cell with barrel plug termination. This is a custom cell produced for SFE not a small toy surplus item! This unit is rated for 4.5V... More
4 Unit(s)

LiPoly Fast Charger - 5V Input

SKU: BAT-00218

$31.95
Sparkfun Electronics
A SparkFun original Lithium Polymer charger. This little black box charges single cell lithium polymer batteries with a max rate of 1A. This works well... More
2 Unit(s)

Coin Cell Holder - 24.5 mm

SKU: PRO-00258

$2.00
Through hole 24.5 mm coin cell holder. This holder fits our rechargeable 24.5mm Lithium Ion coin cell battery. Holds battery in place with friction. Metal... More
3 Unit(s)

Coin Cell Holder - 20mm

SKU: PRO-00374

$2.40
Basic 20mm coin cell holder. Posts can be inserted into 0.1" perf board! Holds the common CR2032 type batteries. Documents:... More
6 Unit(s)

Coin Cell Holder - 12mm

SKU: PRO-00375

$2.50
Through hole 12mm coin cell holder. It's the unit we like to use as RTC backup and SRAM backup for GPS units. Holds battery in place with friction. Metal... More
6 Unit(s)

Miniature Solar Cell - BPW34

SKU: PWD-00588

$2.90
Sparkfun Electronics
The BPW34 is a tiny, general purpose PiN photodiode . This photodiode has a ton of uses, one of which is to use it is a mini solar cell to power... More
11 Unit(s)

Coin Cell Battery Rechargeable - 24.5mm

SKU: BAT-00820

$4.50
A really cool rechargeable Lithium Ion coin cell battery. The battery is rated for 3.7V @ 110mAh - a great way to run a small embedded project for hours.... More
2 Unit(s)

Watertight Battery Holder - 3 x AA

SKU: BAT-00840

$18.90
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... More
2 Unit(s)

Breadboard Power Supply 5V/3.3V

SKU: PWD-00862

$14.50
A very simple breadboard power supply kit that takes power from a DC wall wart and outputs a selectable 5V or 3.3V regulated voltage. The .1" headers are... More
4 Unit(s)

9V to Barrel Jack Adapter

SKU: PWD-00863

$4.20
This simple cable has so many uses! Plug a 9V battery into one end and connect the other end to anything with a 5.5x2.1mm, center-positive barrel jack.... More
10 Unit(s)

9V Battery Holder

SKU: PWD-00869

$4.90
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... More
14 Unit(s)

DC Barrel Jack Adapter - Female

SKU: PWD-00937

$4.50
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... More
11 Unit(s)

DC Barrel Jack Adapter - Male

SKU: PWD-00936

$4.50
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... More
13 Unit(s)

USB LiPoly Charger - Single Cell

SKU: BAT-00938

$22.50
If you need to charge LiPo batteries, this simple charger will do just that, and do it fast! The USB LiPo Charger is a basic charging circuit that allows... More
5 Unit(s)

LiPo Charger Basic - Micro-USB

SKU: BAT-00939

$15.50
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... More
4 Unit(s)

LiPo Charger Basic - Mini-USB

SKU: BAT-00940

$15.50
If you need to charge LiPo batteries, this simple charger will do just that. It is designed to charge single-cell Li-Ion or Li-Polymer batteries. Check the... More
10 Unit(s)

Battery Holder - 4xAA to Barrel Jack Connector

SKU: PWD-01030

$4.50
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... More
2 Unit(s)

Battery Holder 3xAA with Cover and Switch

SKU: PWD-01031

$3.50
This 3xAA battery holder puts a nice finishing touch on your battery powered project. This holder features a removable, sliding cover, which is... More
8 Unit(s)

Solar Cell Large - 2.5W

SKU: PWD-01034

$47.50
Packaged solar cell with barrel plug termination. This is a custom cell produced for SFE - not a small toy surplus item! This unit is rated for... More
2 Unit(s)

Battery Holder 2xAA with Cover and Switch

SKU: PWD-01077

$2.40
This 2xAA battery holder puts a nice finishing touch on your battery powered project. This holder features a removable, sliding cover, which is secured... More
3 Unit(s)

Beefcake Relay Control Kit

SKU: KIT-01094

$12.50
Your 5 volt system can wield great power with this big beefy relay board. How does 20 amps at 220VAC sound? The Beefcake Relay Control Kit contains all the... More
1 Unit(s)

AnyVolt3 - 3A

SKU: PWD-01100

$79.70
The AnyVolt 3 Universal DC-DC Converter is an adjustable step up / step down 3A switching regulator. The output is adjustable from 3 to 24V. The output... More
3 Unit(s)

DE-SWADJ3 Step Down Adjustable Switching Regulator 25W

SKU: PWD-01139

$42.00
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... More
12 Unit(s)

38W DC-DC Converter Output 7.5V@5A

SKU: PWD-01145

$29.50
This is a waterproof DC-DC converter. With 16-36V DC input, it converts to 7.5V@5A which is an ideal supply for robots.   Features... More
3 Unit(s)

Li-Ion/Polymer Battery Charger/Balancer - 50W, 5A

SKU: PWD-01171

$55.50
This charger accurately balances and charges Lithium Polymer, LiFe (A123), NiCd and NiMH batteries. It will handle LiPo/LiFe up to 6S and NiMH/NiCd up to... More
1 Unit(s)

SWADJHV High Voltage Step Down Adjustable Switching Regulator

SKU: PWD-01177

$42.50
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... More
4 Unit(s)

DE-SWADJ Step Down Adjustable Switching Regulator - 10W

SKU: PWD-01179

$24.50
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... More
10 Unit(s)

Negatron DC-DC Converter

SKU: PWD-01180

$36.50
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
3 Unit(s)

LVBoost

SKU: PWD-01181

$35.00
LVBoost is a boost converter that can take voltages as low as 0.5V and convert them into higher, more useful voltages like 3.3V or 5V. It has an... More
9 Unit(s)

Power Cell - LiPo Charger/Booster

SKU: BAT-01183

$29.90
The PowerCell board is a single cell LiPo boost converter (to 3.3V and 5V) and micro-USB charger in one.  The board comes with a JST connector for a... More
3 Unit(s)

Single Relay Module V2

SKU: PWD-01185

$12.90
This Single Relay Module can be used to control the lighting, electrical and other equipments through the digital IO port. Applications include solenoid... More
11 Unit(s)

LiPo Rider Pro

SKU: PWD-01228

$25.50
Power your favorite electronic kit with green energy! This LiPo Rider Pro board allows you ride the solar wave to run your favorite 5V... More
3 Unit(s)

3052_0 - SSR Relay Board

SKU: DEV-01270

$30.00
Solid State Relays, or SSRs, are devices designed to operate like standard relays but without mechanical motion. The SSR Board is safe to use with... More
2 Unit(s)

Wake on Shake

SKU: PWD-01344

$32.50
Have you ever wanted your project to just "hibernate" until someone picks it up or moves it? It's a great strategy for dramatically extending the battery... More
1 Unit(s)

Arduino Relay Shield v2.1

SKU: DEV-01355

$27.50
The Arduino Relay Shield provides an easy way for smart appliance control. It covers control to normal load circuits with 4 photo-coupled solid... More
5 Unit(s)

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

SKU: PWD-01375

$3.20
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 perfectly good barrel jack... More
3 Unit(s)

Battery Holder With Cover And Switch - 4XAA

SKU: PWD-00256

$3.60
High quality 4 Cells AA Battery holder with cover, On/Off switch and 5" tinned leads.
14 Unit(s)

Coin Cell Battery - 12mm

SKU: BAT-00339

$2.90
CR1225 12mm 47mAh coin cell batteries. Perfect small battery for miniature sensor node applications. Dimensions : 12.5mm x 2.5mm Sold as... More
1 Unit(s)

Coin Cell Battery - 20mm

SKU: BAT-00353

$2.90
CR2032 Lithium Ion 3V 250mAh button cell battery. Great for powering low power processors or blink an LED for weeks at a time. Dimensions: 20x3.2mm More
2 Unit(s)

Polymer Lithium Ion Batteries - 20mAh 3.7V With JST Connector

SKU: BAT-1029

$9.90
This is an extremely tiny and light weight battery based on the new Polymer Lithium Ion chemistry. This is the highest energy density currently in... More
3 Unit(s)

Polymer Lithium Ion Batteries - 110mAh 3.7V With JST Connector

SKU: BAT-00215

$10.50
Sparkfun Electronics
This is a very small, extremely light weight batty based on the new Polymer Lithium Ion chemistry. This is the highest energy density currently in... More
7 Unit(s)

Polymer Lithium Ion Battery - 400mAh 3.7V With JST Connector

SKU: BAT-01009

$12.50
This is a very small, extremely light weight battery based on the new Polymer Lithium Ion chemistry. This is the highest energy density currently in... More
18 Unit(s)

Polymer Lithium Ion Batteries - 850mAh 3.7V With JST Connector

SKU: BAT-00216

$12.50
Sparkfun Electronics
These are very slim, extremely light weight batteries based on the new Polymer Lithium Ion chemistry. This is the highest energy density currently in... More
17 Unit(s)

Polymer Lithium Ion Batteries - 1000mAh 3.7V With JST Connector

SKU: BAT-00219

$16.70
Sparkfun Electronics
 These are very slim, extremely light weight batteries based on the new Polymer Lithium Ion chemistry. This is the highest energy density currently in... More

Polymer Lithium Ion Batteries - 2000mAh 3.7V With JST Connector

SKU: BAT-00220

$24.00
Sparkfun Electronics
These are very slim, extremely light weight batteries based on the new Polymer Lithium Ion chemistry. This is the highest energy density currently in... More
5 Unit(s)

Polymer Lithium Ion Batteries - 6Ah 3.7V With JST Connector

SKU: BAT-00221

$48.20
Sparkfun Electronics
If you need some juice, this 6Ahr triple pack is for you. These are very slim, extremely light weight batteries based on the new Polymer Lithium Ion... More
3 Unit(s)

AnyVolt Micro Universal DC-DC Converter

SKU: PWD-00070

$28.50
Dimension Engineering
AnyVolt Micro is a miniature step-up / step-down switching DC-DC converter. The output is adjustable from 2.6V to 14V and currents up to 0.5A can be drawn.... More
5 Unit(s)

DC/DC Converter Breakout

SKU: PWD-00495

$38.00
Sparkfun Electronics
This is a breakout board for the non-isolated, 6A DC-to-DC Converter Module . The module can convert any DC voltage between 4.5-14VDC to a... More
1 Unit(s)

Breadboard Power Supply Stick 5V/3.3V

SKU: PWD-01043

$22.95
Sparkfun Electronics
This is a very simple board that takes a 6-12V input voltage and outputs a selectable 5V or 3.3V regulated voltage. All headers are 0.1" pitch for simple... More
5 Unit(s)

NCP1402-5V Step-Up Breakout

SKU: PWD-01138

$8.50
Sparkfun Electronics
The NCP1402 is a 5V DC-DC converter. The breakout board will accept voltage inputs between 1 and 4 Volts and output a constant, low ripple 5V output... More
6 Unit(s)

NCP1402-3.3V Step-Up Breakout

SKU: PWD-01164

$8.50
Sparkfun Electronics
The NCP1402 is a 3.3V DC-DC converter. The breakout board will accept voltage inputs between 1 and 3 Volts (such as 1 or 2 AA batteries) and output a... More
6 Unit(s)

Wall Adapter Power Supply 5VDC 1A - EU

SKU: PWD-01366

$9.50
High quality switching 'wall wart' AC to DC 5V 1000mA wall power supply manufactured specifically for portable electronics devices. These are switch mode... More
98 Unit(s)

Wall Adapter Power Supply 12VDC 1A - EU

SKU: PWD-01367

$14.50
High quality switching 'wall wart' AC to DC 12V 1000mA wall power supply manufactured specifically for portable electronics devices. These are switch mode... More
99 Unit(s)

Wall Adapter Power Supply 9VDC 650mA - EU

SKU: PWD-00470

$12.00
High quality switching 'wall wart' AC to DC 9V 650mA wall power supply manufactured specifically for portable electronics devices. These are switch mode... More

Barrel Jack Adapter - USB to 5.5mm

SKU: PWD-00166

$4.70
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... More
2 Unit(s)

Barrel Jack to 2-pin JST

SKU: PWD-00270

$4.90
Sparkfun Electronics
Two pin JST connector to a 2.1x 5.5mm barrel jack, 6.25 inch long jumper cable. We use this cable to adapt from a wall power supply to a relatively small,... More
3 Unit(s)