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This breakout board uses the LTC3588 Piezoelectric Energy Harvester from Linear Technologies. This board can be used not only…
These are high quality Single Pole - Double Throw (SPDT) sealed relays. Use them to switch high voltage, and/or high current …
This Digital LED Voltmeter measures the voltage at a particular point of the system it has been hooked up to and then provide…
The SparkFun Adjustable LiPo Charger is a single-cell lithium polymer (LiPo) and lithium ion battery charger. Because it’s …
This simple cable has so many uses! Plug the 9 volt battery clip onto a standard 9V battery and connect the other end to anyt…
This is a simple coin cell battery holder that can enclose two CR2032 batteries inside itself, and safely kept closed via two…
This is the SparkFun MOSFET Power Control Kit, a breakout PTH soldering kit for for the [RFP30N06LE](http://www.sparkfun.com/…
LiPo batteries are a great way to power your projects. They're small, lightweight, and pack a pretty good punch for their siz…
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…
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…
Have a project that needs some good power? Do you like free power provided by our friend, Mr. Sun? Check out this high qualit…
This is a very small, extremely lightweight battery based on Polymer Lithium Ion chemistry. This is the highest energy densit…
This is a portable, slim, lightweight solar panel charger with 10 watts of power and a standard USB connection port.
This 4xAA battery holder puts a nice finishing touch on your battery powered project. This holder features a removable, slidi…
This is the basic LD1117V33 voltage regulator, a low drop positive regulator with a 3.3V fixed output voltage. This fixed reg…
This 9V battery holder allows your battery to snap in tight and holds it in place, which is great in situations where you don…
This is an incredibly simple one cell 18650 Battery Holder. When someone thinks of 18650 Cells they tend to think of flashlig…
The SkyRC B6 V2 is a DC input high-performance, micro-processor controlled charge/discharge/DC/DC converter with battery mana…
This USB AC to DC power supply will do 5V at 2A!
This is an extremely tiny and light weight battery based on the new Polymer Lithium Ion chemistry. This is the highest energy…
This analog panel meter measures DC voltage from 0-5 volts with 2.5% accuracy. It has a clear and easy to read scale and an a…
The SparkFun Variable Load is a quick to assemble kit that has been designed to allow users to draw a specific amount of curr…
You don’t have the power? Well, there’s no need to ask Scotty – the SparkFun Benchtop Power Board Kit has your back. Th…
This is a high quality switching 'wall wart' AC to DC 5V 2000mA USB Micro-B wall power supply manufactured specifically for S…
MOSFETs are awesome. They're like a switch that you flip electronically! This SparkFun MOSFET Power Controller makes it easy …
This high discharge LiPo is a great way to power any R/C, robotic, or portable project. This is an excellent choice for anyth…
We've taken the classic, portable, rechargeable lithium ion battery pack and tweaked the design to make it amenable to low cu…
A very simple breadboard power supply kit that takes power from any USB port and outputs a fuse protected and regulated 3.3V.…
This 2xAA battery holder puts a nice finishing touch on your battery powered project. This holder features a removable, slidi…
The 4-Bay T4s Intelligent Universal Charger from Tenergy is an automatic smart charger compatible with almost all types of re…
The PowerPal is a breadboard-friendly 3A power supply module that allows you to select from four different output voltage le…
The Soft Power Switch is a passive, hard on/off switch with software feedback and control. In other words, it's like the on/o…
The ATX power connector breaks out the standard 4-pin computer peripheral port for you 12V & 5V devices from one wall adapter…
This is the basic L7805 voltage regulator, a three-terminal positive regulator with a 5V fixed output voltage. This fixed reg…
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…
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…
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 …
This is an incredibly simple two cell 18650 Battery Holder. When someone thinks of 18650 Cells they tend to think of flashlig…
Simple 4 Cell AA Battery holder with 5" tinned leads, square configuration.
The KTA-223 Relay Board is a USB or RS485 controlled module that can interface a PC to eight or more SPDT relays. This could …
10Ah capacity & multiple USB options make this a great option for mobile USB power on your next project.
This is a classic 9V snap connector terminated with 2-pin polarized Molex connector with 0.1" spacing.
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…
This 2xAAA battery holder puts a nice finishing touch on your battery-powered project. This holder features a sliding, remova…
The MyoWare Power Shield is designed to take two standard CR2032 coin cell batteries to power the MyoWare Muscle Sensor. We h…
These are your standard 1.5V AA alkaline batteries from Panasonic.
This is the LM317TG voltage regulator, a three-terminal positive regulator with a 1.2V to 37V adjustable output voltage. This…
