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The LiPo Fuel Gauge communicates with your project over I2C and an alert pin also tells you when the charge has dropped below…
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 adjustable wall adapter features a rotary switch on the enclosure that allows you to select the voltage.
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…
This 2xAA battery holder puts a nice finishing touch on your battery powered project. This holder features a removable, slidi…
The MOSFET Power Switch and Buck Regulator (Low-Side) can be powered with up to 12V and control up to 10A, all while providin…
The KR Sense 45A is a small voltage and current sense breakout board.
This is a unique two-cell AAA battery holder built specifically for the BBC micro:bit. The 6" (~150mm) cable has been termina…
This is a high-quality switching 'wall wart' AC to DC 5.1V 2,500mA USB Micro-B wall power supply manufactured specifically fo…
CR2032 Lithium metal 3V 250mAh button cell battery. Great for powering low power processors or blink an LED for weeks at a ti…
The Soft Power Switch Mk2 is a passive, hard on/off switch with software feedback and control. In other words, it's like the …
This is a classic 9V snap connector terminated with 2-pin polarized Molex connector with 0.1" spacing.
This is a flexible silicone USB-C to USB-C power charging cable.
This is a high quality AC to DC 'wall wart' which produces a regulated output of 12VDC at up to 600mA.
If you need to charge LiPo batteries, this simple charger will do just that, and do it fast! The SparkFun USB LiPo Charger is…
The SparkFun 1.8V Buck Regulator Breakout features the AP3429A from Diodes Inc., a 2A step-down DC-DC converter with an input…
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 is an extremely tiny and light weight battery based on the new Polymer Lithium Ion chemistry.
Here is a very simple breadboard power supply kit that takes power from a DC wall wart and outputs a selectable 5V or 3.3V re…
The 1.2 Watt Volt small solar panel from Voltaic Systems is a lightweight, waterproof, small solar panel designed for 5-7 yea…
This 2A "laptop brick" supply outputs both 5V and 12VDC and is terminated with a 4-pin ATX connector.
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…
This is a high quality switching 'wall wart' AC to DC 9V 650mA wall power supply manufactured specifically for SparkFun Elect…
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 USB Power Meter is a versatile tool that can provide voltage, current, capacity, and impedance displayed on the built-in…
This is a 12.5W Micro-USB Power Adapter with the US power prongs (100-240VAC). It's made for use with Raspberry Pi Zero 2 W, …
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 …
The 0.3 Watt 2 Volt mini solar panel from Voltaic Systems is a lightweight, waterproof, solar panel designed for 5-7 year out…
The SparkFun Qwiic Dual Solid State Relay is a power delivery board that allows users to switch two AC loads from a low power…
A Lithium battery specifically designed for operating the real time clock (RTC) on the Raspberry Pi 5.
This is a unique two-cell AA battery holde. The 6" (~150mm) cable has been terminated with a JST-PH connector.
This is an incredibly simple one cell 18650 Battery Holder. When someone thinks of 18650 Cells they tend to think of flashlig…
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…
USB is being implemented as a power connection standard more and more these days, but you don't always have a computer on han…
This is a high quality power supply manufactured specifically for SparkFun Electronics packs a lot of power; 20W at 5V and 40…
This 3xAA battery holder with JST connector puts a nice finishing touch on your battery powered project.
Simple 4 Cell AA Battery holder with 5" tinned leads, square configuration.
The SparkFun Breadboard Power Supply Stick with headers is a simple board that takes a 6-12V input voltage and outputs 5V or …
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…
10Ah capacity & multiple USB options make this a great option for mobile USB power on your next project.
This is a portable, slim, lightweight solar panel charger with 10 watts of power and a standard USB connection port.
The BPW34 is a tiny, general purpose [PiN photodiode](http://en.wikipedia.org/wiki/PIN_diode). This photodiode has a ton of u…
This is the basic L7805 voltage regulator, a three-terminal positive regulator with a 5V fixed output voltage. This fixed reg…
This is a simple coin cell battery holder that can enclose two CR2032 batteries inside itself, and safely kept closed via two…
This 3xAA battery holder with bare wire leads puts a nice finishing touch on your battery powered project.
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 barrel jack plug is great for adding a common connector to the end of our wires. This jack is compatible with 5.5mm barr…
