2-AA Battery Holder 3V Waterproof Case with ON/OFF Switch

2-Section AA Battery Holder with ON/OFF Switch — 3V Waterproof & Dustproof

Keep your DIY electronics, LED projects, and portable devices powered safely with this compact 2-AA Battery Holder (3V). Designed with a built-in ON/OFF switch and a sealed waterproof, dustproof housing, this battery cartridge is perfect for hobbyists, makers, and everyday electrical projects where reliability matters.

Key Features

• Waterproof & Dustproof Housing: Sealed plastic enclosure protects battery contacts and connections from moisture and debris, making it suitable for outdoor and workshop use.
• Built-In ON/OFF Switch: Easily cut or restore power without removing batteries — ideal for prototyping and recurring-use projects.
• 3V Output: Holds 2 × AA (No.5) batteries in series for a stable 3V power supply compatible with a wide range of low-voltage electronics.
• Durable Plastic Construction: Lightweight yet sturdy body built to withstand everyday handling in projects and experiments.
• Compact & Portable: Small form factor fits neatly into enclosures, project boxes, or can be mounted directly in your builds.
• Universal Compatibility: Works with standard AA (No.5) alkaline or NiMH rechargeable batteries (batteries not included).

Specifications

• Battery Type: 2 × AA (No.5)
• Output Voltage: 3V
• Switch: ON/OFF toggle
• Material: Durable plastic
• Protection: Waterproof & dustproof
• Package Includes: 1 × Battery Holder (batteries NOT included)
• Country of Origin: Made in Mainland China

Perfect For

• DIY electronics & Arduino/microcontroller projects
• LED strip and lighting builds
• Outdoor sensors and garden gadgets
• Robotics, RC models, and hobbyist maker boards
• Science fair and educational STEM experiments

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For safe handling and storage of batteries, refer to the U.S. Consumer Product Safety Commission (CPSC) Battery Safety Guide.

Note: Color may vary slightly from images due to monitor brightness and lighting conditions. Please allow for minor manual measurement deviations.

Learn more: Battery holder

Frequently Asked Questions

Q: What type and how many batteries does this holder require?

A: This battery holder uses 2 × standard AA (No.5) batteries connected in series to deliver a 3V output. Both alkaline and NiMH rechargeable AA batteries are compatible. Batteries are not included.

Q: Is this battery holder truly waterproof for outdoor use?

A: Yes — the enclosure features a waterproof and dustproof sealed design, making it suitable for outdoor projects, garden electronics, and workshop environments where exposure to moisture or dust is a concern.

Q: How does the ON/OFF switch work?

A: The integrated ON/OFF toggle switch allows you to instantly connect or disconnect power from your project without physically removing the batteries, which is especially handy for prototyping or devices used intermittently.

Q: What kinds of projects is this battery holder best suited for?

A: It's ideal for a wide range of low-voltage (3V) applications including Arduino and DIY maker board projects, LED lighting circuits, outdoor sensors, robotics, RC hobby vehicles, and educational STEM experiments.