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This USB Power Meter is a versatile tool that can provide voltage, current, capacity, and impedance displayed on the built-in…
The PiJuice is a fully uninterruptible power supply HAT that will always keep your Raspberry Pi powered.
CR2032 Lithium metal 3V 250mAh button cell battery. Great for powering low power processors or blink an LED for weeks at a ti…
This is the Sunny Buddy, a maximum power point tracking (MPPT) solar charger for single-cell LiPo batteries. This MPPT solar …
The SparkFun Battery Babysitter is an all-in-one single-cell Lithium Polymer (LiPo) battery manager. It’s half battery char…
These are very slim, extremely light weight batteries based on Lithium Ion chemistry. Each cell outputs a nominal 3.7V at 200…
If you need to charge LiPo batteries, this simple charger will do just that, and do it fast! The SparkFun LiPo Charger Basic …
This is a very small, extremely lightweight battery based on Lithium Ion chemistry, with the highest energy density currently…
These are very slim, extremely light weight batteries based on Lithium Ion chemistry. Each cell outputs a nominal 3.7V at 850…
These are very slim, extremely light weight batteries based on Lithium Ion chemistry. Each cell outputs a nominal 3.7V at 100…
The SparkFun 5V/1A LiPo Charger/Booster is a no-nonsense circuit for generating one amp from a Lithium Polymer battery at 5V.…
This is a high-quality switching 'wall wart' AC to DC 5.1V 2,500mA USB Micro-B wall power supply manufactured specifically fo…
The SparkFun LiPo Charger Plus is the suped-up power option in the SparkFun line of single-cell lithium polymer (LiPo) batter…
The SparkFun Nano Power Timer will run while only consuming minimal power (approximately 35nA) and turn your project on after…
This is a high quality switching 'wall wart' AC to DC 5V 2000mA Barrel Jack wall power supply manufactured specifically for S…
A solid state relay (SSR) allows you to control high-curent AC loads from lower voltage DC control circuitry. Solid state rel…
If you need some juice, this 6Ah Lithium Ion Battery is for you. These are very compact batteries based on Lithium Ion chemis…
The SparkFun Qwiic Quad Relay is a unique power accessory board, used for switching 4 high powered devices from your Arduino …
The SparkFun Buck-Boost Converter is a handy power accessory board that allows you to fine tune the amount of power your proj…
The is the official USB Type-C Power Supply for the Raspberry Pi Model 4 B.
CR1225 lithium metal 3V 12mm 47mAh coin cell batteries. Perfect small battery for miniature sensor node applications. Thes…
This is a high quality power supply manufactured specifically for SparkFun Electronics packs a lot of power; 20W at 5V and 40…
The LiPower board is based on the incredibly versatile TPS61200 boost converter. The board is configured to be used with a Li…
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 …
If you need to charge LiPo batteries, this simple charger will do just that, and do it fast! The SparkFun USB LiPo Charger is…
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 unique two-cell AA battery holde. The 6" (~150mm) cable has been terminated with a JST-PH connector.
This is a simple 4 cell AA battery holder. The 5 inch cable is terminated with a standard 5.5x2.1mm, center positive barrel j…
This is a very small, extremely light weight battery based on Lithium Ion chemistry. This is the highest energy density curre…
High quality switching 'wall wart' AC to DC 9V 650mA wall power supply manufactured specifically for Spark Fun Electronics. T…
Your 5V system can wield great power with this big, beefy relay board. How does 10A on the NC contacts and 20A on the NO cont…
This breakout board uses the LTC3588 Piezoelectric Energy Harvester from Linear Technologies. This board can be used not only…
The SparkFun Qwiic Single Relay provides you with the easiest to use relay yet, handling up to 5.5A at 240VAC for long period…
Have a project that needs some good power? Do you like free power provided by our friend, Mr. Sun? Check out this high qualit…
These are high quality Single Pole - Double Throw (SPDT) sealed relays. Use them to switch high voltage, and/or high current …
Do you want to control a standard wall outlet device with your microcontroller, but don’t want to mess with the high-voltag…
No, these aren't some sort of weird, AA battery, this is actually a 18650 Lithium Ion Cell. These round high capacity cells h…
The SparkFun Adjustable LiPo Charger is a single-cell lithium polymer (LiPo) and lithium ion battery charger. Because it’s …
This is a very simple board that takes a 6-12V input voltage and outputs a selectable 5V or 3.3V regulated voltage. All heade…
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…
6 pin SOT-23 to DIP adaptor. Created to take SOT23 of various pin sizes breakout to DIP. This will work with 3-pin MOSFETs, B…
This is the same 18650 Lithium Ion Cell that you know and love, but now includes pre-attached solder tabs! These round high c…
This is a high quality switching 'wall wart' AC to DC 9V 650mA wall power supply manufactured specifically for SparkFun Elect…
This is the SparkFun MOSFET Power Control Kit, a breakout PTH soldering kit for for the [RFP30N06LE](http://www.sparkfun.com/…
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 adapter allows you to connect a barrel jack connector to bare wires. One end has screw terminals and the other has a 5.5…
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…
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