Batteries

3.7V lithium batteries are commonly used in many projects. However, the remaining power and voltage of the lithium battery are highly nonlinear. W...

3 AA battery box with croc-clip-friendly connection points and built-in resettable fuse to protect against short-circuits.The on-board green LED sh...

A lightweight, sewable battery board that's great for paper and fabric engineering projects. Works with CR2032 coin cell batteries. The voltage ...

Here's another addition to our growing family of AA battery holders. A holder for three (3) AA batteries! It's got an 8" long power cable with a...

Get with the times, already! This SparkFun Real Time Clock (RTC) Module is a Qwiic-enabled breakout board for the RV-1805 chipset. The RTC is ...

DISCONTINUED: This product has been discontinued, the page is available for reference and documentation. Today, your router is running 7x24 for onl...

CR2032 Button Cell Battery - Great for use with the Lilypad Switch Battery HolderAdditional Information Button battery safety information Warning: ...

We've got battery holders for all sorts of needs and projects! Waterproof? Here ya go. With a clicky on/off switch? Easy peasy. Here's our lates...

This E-Textiles  Coin Cell Battery Holder has a small slide switch installed on the board, in-line with the power so you can shut off your project ...

Here's another addition to our growing family of AA battery holders. Behold! A holder for four (4) AA batteries! It's got a 5" long power cable ...

150mm 6'inch LCD Digital Electronic CaliperPerfect hobby caliper.

These high capacity batteries are used in many desktop and notebook computers to retain date, time and configuration information while the compute...

A Smart Bluetooth Button that can be programmed wirelessly, in JavaScript! Puck.js is an intelligent Bluetooth button. With the Espruino JavaScr...

This Mini Power Meter with Voltage, Current, Watts, mAh & mWh Display (whew that is a mouth-full) is a lot like the USB In-Line Voltage and ...

A massive rechargeable battery pack for your Raspberry Pi (or Arduino, or Propeller, or anything else that uses 5V!). This pack is intended for ...

The 4-Bay T4s Intelligent Universal Charger from Tenergy is an automatic smart charger compatible with almost all types of rechargeable batteries, ...

MoPi-2 is mobile and 24/7 power for the Pi 2 and Pi 3 boards. On your bike, up a tree, or for your home server: we've got you covered! MoPi-2 featu...

We've taken the classic, portable, rechargeable lithium ion battery pack and tweaked the design to make it amenable to low current applications. Wh...

The Parrot Mambo Minidrone is full of surprises! Whether you equip it with the Cannon or the Grabber, it'll turn the sky into an amazing playgro...

This 5m length of EL wire (electroluminescent wire) is a flexible wire coated with phosphor which glows blue when applied with the appropriate volt...

This cordless precision screwdriver includes 6 bits and is compatible with standard 4 mm bits. It is ideal for precision work such as smartphones, ...

Pyscan is a sensor shield you can use with any of your Pycom multi-network development boards! Featuring an accelerometer, ambient light sensor ...

An essential companion to the Chibi Chip, the Clip enables rapid testing and re-use of the Chip. With the Clip, attaching (and detaching) your C...