Power & Batteries

SKU: AF-2897 | Brand: Adafruit

A simple adapter that sits inside a 5.5 / 2.5 mm DC barrel jack, allowing you to use a standard 5.5 / 2.1 mm barrel plug with it. Just insert the adapter into the device's 2.5 mm jack, then plug in your 2.1 mm power s...

SKU: SF-PRT-00552 | Brand: SparkFun

Simple 4 Cell AA Battery holder with 5" tinned leads, square configuration.

SKU: SF-COM-00527 | Brand: SparkFun

The LM317TG is a three-terminal adjustable positive voltage regulator with an output range of 1.2V to 37V and up to 1.5A output current. Only two external resistors are needed to set the desired output voltage, making...

SKU: SF-PRT-11476 | Brand: SparkFun

This barrel jack plug is great for adding a common connector to the end of our wires. This jack is compatible with 5.5mm barrel jacks that have a 2.1mm center pole diameter. The outer shell unscrews to reveal solder t...

SKU: AF-184 | Brand: Adafruit

Build your own breadboard-friendly adjustable power supply with this soldering kit. Based on the MIC2941 low-dropout regulator, it provides a guaranteed 1.25A output with only 40–400 mV dropout — far better than the L...

SKU: SF-PRT-10891 | Brand: SparkFun

This 3xAA 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 swi...

SKU: SF-PRT-09541 | Brand: SparkFun

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 your project. The cell is sensitive to a wide range of light wavelengths ...

SKU: AF-875 | Brand: Adafruit

This 8×AA battery holder provides a portable power source with a built-in on/off switch and a standard 5.5 mm / 2.1 mm DC barrel plug for easy connection to Arduino boards, LED strips, motors, and other 12V devices. U...

SKU: TB-MP3490 | Brand: Little Bird

Regulated output voltage, small size and higher power output make these AC adaptors suitable for thousands of different applications. Features: Slimline design Supplied with 7 plugs

SKU: LB-LS4126-LS1558 | Brand: Little Bird

FeaturesIndependent Charging: Each of the four slots operates independently, allowing simultaneous charging of different battery sizes or charge levels.LED Indicator Lights: Red – Charging Green – Fully Charged S...

SKU: LB-1601026 | Brand: Little Bird

This USB splitter cable expands a single USB 2.0 Type-A port into two, allowing you to connect multiple devices simultaneously for both charging and data transfer. It's a compact solution for adding extra USB connecti...

SKU: SF-CAB-25579 | Brand: SparkFun

A 1-metre USB-C extension cable with an inline power switch that maintains full USB 2.0 data connectivity. Unlike typical USB power switch cables that only toggle VBUS, this cable also connects the D+/D- data lines, b...

SKU: DF-DFR0580 | Brand: DFRobot

The DFRobot Solar Power Manager series are designed for IoT projects and renewable energy projects, providing safe and high-efficiency embedded solar power management modules for makers and application engineers. This...

SKU: DF-FIT0845 | Brand: DFRobot

PTC stands for “Positive Temperature Coefficient”. This thermostatic ceramic PTC heating element can be used to automatically maintain a constant temperature without special temperature controllers and temperature sen...

SKU: AF-4696 | Brand: Adafruit

Perhaps your smart phone, tablet, or even your Raspberry Pi 4, 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 th...

SKU: AF-4711 | Brand: Adafruit

The AP3429A Buck Converter Breakout steps down 3.4–5.5V input to a stable 3.3V output at up to 1.2A, with 90–95% efficiency. It's ideal for powering 3.3V circuits from LiPo batteries, 3× alkaline cells, or USB power s...

SKU: SF-CAB-15426 | Brand: SparkFun

USB-C is fantastic. What makes this cable even better is that one of the features we love so much about USB-C has been replicated to the USB-A 2.0 plug! These cables have minor, yet genius modifications that allow ...

SKU: AF-899 | Brand: Adafruit

A compact 6" (approx. 15cm) USB Type-A to Mini-B cable for USB 1.1 and 2.0 connections. Ideal for keeping on the bench when you need a short, tidy cable to connect to Teensy boards, USB LiPo chargers, or other Mini-B ...

SKU: AF-1125 | Brand: Adafruit

Add a power switch to any project simply by plugging this between the power supply. This is the most useful thing you never knew you needed! You'll want to pick up a bunch for your electronic projects.Comes with a 5.5...

SKU: DF-DFR0579 | Brand: DFRobot

The Solar Power Manager Micro is an ultra-low-power solar energy management module designed for 1–3 V small solar panels. Built around the SPV1050 IC with MPPT (Maximum Power Point Tracking), it maximises solar conver...