Adafruit
3x AA Battery Holder with On/Off Switch and 2-Pin JST
This compact battery holder connects 3× AA batteries in series, providing 3.3–4.5V output — a similar range to lithium-ion/polymer batteries. It features a b...
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This compact battery holder connects 3× AA batteries in series, providing 3.3–4.5V output — a similar range to lithium-ion/polymer batteries. It features a built-in on/off switch and a genuine JST-PH 2-pin connector with a 6" cable, making it a convenient drop-in power source for 3.3V projects with JST battery connectors.
The polarity matches standard 2-pin JST cables and Li-Ion/Poly batteries, so it can be used as an alternative non-rechargeable power source for boards designed for LiPo batteries.
Key Features
- 3× AA Series Configuration – 3.3–4.5V output range
- Genuine JST-PH 2-Pin Connector – Polarity-matched, smooth insertion and removal
- Built-In On/Off Switch – Convenient power control
- 6" Cable Length – Flexible placement options
Voltage Output
- Alkaline – 4.5V (new) to 3.3V (end of life), nominal ~4.5V
- NiMH Rechargeable – 3.7V (charged) to 2.7V (end of life), nominal ~3.6V
Ideal For
- 3.3V microcontroller projects with JST battery connectors
- Portable electronics and wearables
- Alternative to LiPo batteries where rechargeability isn't needed
- Educational and prototyping projects
Package Contents
- 1× 3×AA battery holder with on/off switch and JST-PH 2-pin connector
Jargon buster
Plain-language definitions for the technical terms used above.
- LiPo
- A LiPo (lithium polymer) battery is a rechargeable lithium battery widely used in portable projects because it is light and compact. LiPo cells need correct charging circuitry and careful handling to stay safe, so equipment that supports LiPo generally includes charging or protection hardware suited to that battery type.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- 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.
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Power & Batteries
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