Adafruit
2 x 2032 Coin Cell Battery Holder - 6V output with On/Off switch
A compact coin cell battery holder designed for small portable and wearable electronics projects. It holds two 20mm coin cells (CR2032 is the most common siz...
A compact coin cell battery holder designed for small portable and wearable electronics projects. It holds two 20mm coin cells (CR2032 is the most common size) wired in series to provide 6V nominal output, with an on/off switch built into the top for convenient power control.
The holder features a 2mm JST PH connector on the output leads, making it easy to connect to microcontroller boards and breakouts that use JST PH inputs. The plastic enclosure snaps open and closed for easy battery changes.
Key Features
- Dual Coin Cell Holder – Holds two 20mm coin cells (CR2032) in series for 6V output
- Built-in On/Off Switch – Conveniently located on top of the holder
- JST PH Connector – 2mm JST PH plug for easy connection (can be cut off to solder a different connector)
- Snap-Close Design – Plastic enclosure opens and closes securely
Specifications
- Battery Type: 20mm coin cell (CR2032 recommended)
- Cell Count: 2 (series)
- Output Voltage: 6V nominal
- Typical Capacity: ~220mAh (with CR2032 cells)
- Connector: 2mm JST PH
Ideal For
- Wearable electronics and e-textiles
- Small portable projects and prototypes
- LED jewellery and light-up accessories
- Low-power microcontroller projects
Package Contents
- 1× 2-Way Coin Cell Battery Holder with switch and JST PH connector
Jargon buster
Plain-language definitions for the technical terms used above.
- e-textiles
- Electronic textiles are fabrics or clothing that include electrical parts such as conductive thread, sensors, LEDs, or small controllers. This matters because parts for e-textiles need to survive bending, sewing, and sometimes washing.
- JST PH
- A small keyed plug-and-socket connector with 2 mm pin spacing, often used for low-power electronics connections. You need the correct JST PH cable, and its current rating limits how much power should be passed through it.
- LED
- A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- pH
- A measure of how acidic or alkaline a liquid is, on a scale where 7 is neutral. For a water monitoring kit, pH tells you about water chemistry and whether the included probe matches the range and accuracy your project needs.
Find this product in
Power & Batteries
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