Batteries (LiPo, NiMH, coin cell)

This battery charger allows you to easily gang three 18650 battery cells together to create a rechargeable battery pack. Featuring sophisticated de...

This is a great battery-backed real time clock (RTC) that allows your microcontroller project to keep track of time even if it is reprogrammed, or ...

Our RedBoards are great. But don't they sometimes seem a little BIG?! Enter smôl, a new range of boards which are both small in size and small ...

The digital multimeter (DMM) is an essential tool in every electronic enthusiasts arsenal. This Smart Digital Multimeter, however, is not your aver...

You may need this item if you want to power your Arduino with a 3.7V LiPo battery to make it become a portable device. It made up of a “power cell”...

Welcome to the world of paper circuits - creating electronic projects directly on paper using simple components! The SparkFun Paper Circuits Kit te...

This kit contains a micro:bit board, a USB cable and a battery holder. This is a basic kit for using micro:bit. Micro:bit board is launched by BBC ...

A nice portable power pack can help you a lot when you build up you projects. Come and make one with this 3×AA battery holder. It can fit three AA ...

DFRobot Raspberry Pi UPS HAT is an uninterruptable power supply shield for Raspberry Pi. It can provide steady power source to Raspberry Pi for an ...

This is a Li-ion Battery Holder specially designed for micro: bit educational robot Maqueen. It can be used to hold a CR123A 3.6V lithium rechargea...

This is a battery box specialized for micro:bit. You can place two AAA batteries into the battery holder, switch on and then it will supply powe...

Sometimes we want our projects on, but sometimes we want to turn them off for a while to save power. The SparkFun Nano Power Timer will run while o...

The SparkFun LiPo Charger Plus is the souped-up power option in the SparkFun line of single-cell lithium polymer (LiPo) battery chargers. With this...

Power:bit button cell board is a micro expansion board in the smallest size equipped with a buzzer. It can not only supply power to the board but i...

Description This battery enclosure (with switch) for the BBC micro:bit is the perfect way to power your micro:bit on the go. Specifications:  2...

This battery holder connects 2 AAA batteries together in series for powering all kinds of projects. We spec'd these out because the box is open ...

This battery holder connects 2 AAA batteries together in series for powering all kinds of projects. We spec'd these out because the box is ni...

ELECFREAKS Power:bit is a kind of micro:bit extension board with minimum size. It is powered by two 2025 button batteries and carries a buzzer o...

ESC (Electronic Speed Controller) can be divided into brushed ESC and brushless ESC according to the different motor types. It is widely used in t...

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

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 ...

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...

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 ...