Power & Batteries

SKU: DF-FIT0169 | Brand: DFRobot

A waterproof DC-DC step-down (buck) converter that accepts 16–36V DC input and outputs a stable 9V at up to 5A (45W). The sealed, shockproof enclosure and 96% efficiency make it well suited for robotics, vehicles, and...

SKU: SF-PRT-14299 | Brand: SparkFun

This is a unique two-cell AA battery holder built specifically for the BBC micro:bit. The 6" (~150mm) cable has been terminated with a JST-PH connector. The connector mates the JST socket on the micro:bit perfectly...

SKU: SF-CAB-14276 | Brand: SparkFun

USB On-The-Go (OTG) is a really useful USB specification! It allows some small devices that would normally be unable to act as a host to have limited hosting capabilities! USB OTG is common for things like tablet c...

SKU: AF-2745 | Brand: Adafruit

Your power supply problems just got SUPER SOLVED! This 3.3V Buck Converter Breakout board is great for supplying power to low voltage circuits from a single Li-Ion cell battery or USB power...

SKU: SF-PRT-14219 | Brand: SparkFun

A 2×AAA battery holder with a sliding cover and built-in ON/OFF switch. The cover keeps batteries secure, and the switch provides convenient power control for your project. Wire leads are approximately 150 mm long wit...

SKU: SF-COM-08357 | Brand: SparkFun

This is a handy little device that can save your system from smoking. A resettable fuse (also known as a PTC) is a resistor that has very unique properties.  For this model, if your circuit tries to draw more tha...

SKU: SF-DEV-11893 | Brand: SparkFun

The LilyPad Simple Power is a simple e-textile board that lets you connect and charge a lipo battery and switch it on or off, that’s it! We provide you with a JST connector and a slide switch, you supply the battery a...

SKU: DF-FIT0333 | Brand: DFRobot

A lightweight, thin, and truly flexible solar panel rated at 1.5V / 250mA (0.5W). Unlike rigid solar panels, this one can be bent, sewn, or adhered to curved surfaces, making it perfect for wearable electronics, porta...

SKU: AF-80 | Brand: Adafruit

A high-quality 9V battery clip with a pre-assembled 5.5mm/2.1mm centre-positive barrel connector. The moulded plastic clip covers the battery terminals to prevent short circuits, and the barrel plug connects directly ...

SKU: SF-CAB-11579 | Brand: SparkFun

Behold, the Hydra! This USB power cable probably looks a lot like something you’ve hacked together before. We do it all the time, because what is a computer if not a 5V power supply that happens to run software? T...

SKU: AF-3191 | Brand: Adafruit

The Adafruit Power Relay FeatherWing lets you switch high-power loads — lamps, fans, solenoids, small appliances, and more — directly from any Feather microcontroller board. With a switching capacity of up to 10A at 1...

SKU: SF-PRT-13113 | Brand: SparkFun

This is a PCB mount clip to hold a 18650 Lithium Ion Cell battery. Each battery holder is sold in single units, you’ll need two for each battery. These work great for larger, high capacity applications where a drop-in...

SKU: SF-ROB-13064 | Brand: SparkFun

This is a 6 wire slip ring, a remarkably simple electromechanical assembly that allows electronic signals to be passed through its rotating innards. Commonly, you’d find slip rings in wind turbines, radar antennae, or...

SKU: AF-448 | Brand: Adafruit

A 12V EL (electroluminescent) wire and tape inverter for fixed installations and larger EL projects. Unlike pocket-sized 2×AA inverters, this brick-style inverter runs from a 12V DC input — connect it to a wall adapte...

SKU: AF-653 | Brand: Adafruit

This sewable CR2032 battery holder makes it easy to add power to wearable electronics projects. Two small 1mm holes in the metal connection tabs are perfectly sized for a #5 or smaller needle to pass through, so you c...

SKU: AF-743 | Brand: Adafruit

Outdoor enthusiasts rejoice! We now have standard 5.5/2.1mm DC power cable sets in a waterproof variety. These cable sets are ideal for projects that must weather the weather: dust, water, rain, snow, tornado (not vol...

SKU: SF-PRT-09925 | Brand: SparkFun

This 2xAA battery holder puts a nice finishing touch on your battery powered project. This holder features a removable, sliding cover, which is secured with a small Phillips head screw. Another bonus is the ON/OFF ...

SKU: AF-3438 | Brand: Adafruit

Your cell phone charges off of USB, but can you really trust that charging station at the airport? Now you can control when to allow data in or out of your device with this little USB extension cable. You can plug ...

SKU: SF-PRT-09835 | Brand: SparkFun

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 connector mates with the barrel jack on the Arduino (among a numbe...

SKU: AF-4712 | Brand: Adafruit

The Adafruit LC709203F Fuel Gauge monitors your single-cell LiPo or Li-Ion battery and reports both voltage and state of charge as a percentage over I2C. It handles the non-linear voltage-to-percentage conversion for ...