LilyPad Coin Cell Battery Holder CR2032

SKU: FA1033-6
Power Source

1 x CR2032 Coin Cell Battery (Battery not included)
Output Voltage (Nominal)

Approx. 3V DC
Output Connection

Sew Tabs (+ and -)
Integrated Switch

Slide On/Off Switch
Current Output

Limited by the CR2032 battery capabilities (typically max 3mA – 15mA continuous draw)
Dimensions

Approx. 30mm (1.2") diameter
Compatibility

Best suited for 3.3V LilyPad Microcontrollers and low-power LEDs
LilyPad Coin Cell Battery Holder CR2032

The LilyPad Coin Cell Battery Holder is the perfect power solution for compact, low-power e-textile projects. It is a sewable battery holder designed specifically for a single, ubiquitous CR2032 coin cell battery, providing approximately 3V of power.
This small, lightweight component is essential for projects where size and weight are critical, making it suitable for discreet integration into delicate garments, small accessories, or educational projects that require a temporary power source.
Description
When designing truly integrated wearable electronics, finding a compact power source can be a challenge. The LilyPad Coin Cell Battery Holder provides an elegant solution by securely housing a single CR2032 battery, a common 3V power source readily available in stores worldwide.
The holder features a minimalist design with two large “sew tabs” clearly labeled with ‘+’ and ‘−’ indicators. These tabs facilitate easy and reliable integration into fabric projects using conductive thread, eliminating the need for soldering or bulky wires.
A key feature of this holder is the integrated small slide switch, which provides an easy and convenient way to turn your project on and off without having to physically remove the battery—a major quality-of-life improvement for any wearable project.
The voltage supplied by the CR2032 is typically around 3V, which perfectly matches the operating voltage requirements of most 3.3V LilyPad microcontrollers and components running at 8MHz. This holder provides an accessible, low-cost way to power basic circuits, offering a durable solution for both rapid prototyping and simple, long-term installations.
Features
  • CR2032 Compatibility: Designed specifically to hold one standard CR2032 coin cell battery (Battery not included).
  • Integrated On/Off Switch: Includes a small slide switch for convenient power control without removing the battery.
  • Sewable Design: Features large “sew tabs” for easy, secure integration into fabric using conductive thread.
  • Low Profile: Extremely flat and circular design ensures the holder sits discreetly within garments.
  • Optimal Voltage: Provides approximately 3V output, ideal for powering 3.3V LilyPad systems and components.
  • Clear Labeling: Tabs are clearly labeled with ‘+’ (Power) and ‘-‘ (Ground) for simple wiring.
  • Durable Construction: Robust build quality suitable for repeated battery swaps and use in wearable projects.
Usage
The LilyPad Coin Cell Battery Holder is used as the primary power source for compact e-textile projects:
  1. Wearable Accessories: Powering small, decorative LED components in jewelry, hair accessories, or small patches.
  2. Educational Tools: Providing a simple, safe power source for students learning basic e-textile circuits.
  3. Discreet Integration: For projects where a larger LiPo or AAA battery holder would be too bulky.
  4. Temporary Installations/Art: Ideal for short-term projects that require easy power management via the integrated switch.
Q: Does this holder regulate the voltage?

No, it does not regulate the voltage. It provides the raw voltage of the CR2032 battery (approx. 3V). This is suitable for 3.3V systems but is not appropriate for projects requiring a stable, regulated 5V source.

Q: Does it come with a battery?

No, the CR2032 coin cell battery is sold separately.

Q: Can I recharge a CR2032 battery in this holder?

No. CR2032 batteries are primary (single-use) batteries. Attempting to recharge a non-rechargeable battery is extremely dangerous and can cause explosions or fires. For rechargeable solutions, use the LilyPad LiPower board and a LiPo battery.

Q: Is the holder washable?

Yes, the board itself is designed to be hand-washable, provided the battery is removed first and the entire unit is allowed to air dry completely before any new batteries are inserted.

Q: How long will a CR2032 battery last in this holder?

Battery life depends heavily on how many components you connect and how much current they draw. A CR2032 has limited capacity (around 200mAh). For a simple circuit with 2-3 LEDs, it might last many days of intermittent use. For a microcontroller drawing high current, it might only last a few hours.

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