A slim 2×AA battery holder with a built-in on/off switch and genuine JST PH connector. Two AA batteries in series provide approximately 3V — ideal for powering low-voltage electronics projects, microcontrollers, and portable builds without needing to disconnect the battery to turn off power.

The JST PH connector polarity matches Adafruit's Li-Ion/LiPo batteries and 2-pin JST cables, so it plugs straight into boards with JST PH battery inputs. This is also a great upgrade for micro:bit projects — the on/off switch means you don't have to unplug the connector to power down, and AA batteries last significantly longer than the AAA cells in standard micro:bit battery packs.

Key Features

• On/Off Switch – Conveniently control power without disconnecting
• Genuine JST PH Connector – Correct polarity, smooth fit in JST sockets
• Slim Form Factor – Compact holder for portable and wearable projects
• Standard AA Batteries – Widely available, long-lasting power

Specifications

• Battery Type: AA (not included)
• Cell Count: 2 (series)
• Output Voltage: ~3V nominal (alkaline), ~2.4V nominal (NiMH rechargeable)
• Connector: JST PH 2-pin

Ideal For

• micro:bit projects (replaces AAA battery pack with longer-lasting AAs)
• Adafruit boards with JST PH battery inputs
• Portable electronics and wearable builds
• STEM education and classroom projects

Package Contents

• 1× 2×AA Battery Holder with On/Off Switch and JST PH Connector