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Rectangular black plastic case with rubber gasket, screw ears, toggle switch and cable

Adafruit

Adafruit Waterproof 3xAA Battery Holder 50mm 36g

SKU CH-EE4B-KAEF4

Holds three AA cells in a waterproof case with a rubber gasket, captive screws and a sealed on/off switch for 4.5 V output

  • TypePrototyping Products
  • Waterproof construction with rubber gasket protects batteries in wet conditions
  • Holds three AA cells delivering approximately 4.5 V for portable projects
  • Potted power switch and rubber-boot on/off switch resist moisture ingress
  • Captive hex-nuts and four machine screws allow repeated assembly and disassembly
  • 150 mm lead cable provides flexible wiring without polarity markings

Waterproof 3xAA Battery Holder

This holder accepts three AA cells and provides roughly 4.5 V for portable projects. A rubber gasket and four machine screws seal the case against moisture. The potted switch and rubber-boot toggle resist water ingress. It suits outdoor sensors, wearable prototypes or any build needing a protected power source.

Upgrade from open battery packs

Open trays expose contacts to rain, splashes or condensation and can short unexpectedly. This enclosure adds a gasketed seal and a covered switch so the circuit stays dry. The jump is worth it when the project lives outside, on a vehicle or in humid environments where bare holders fail quickly.

Simple screw-together assembly

The two halves join with four captive hex nuts and machine screws, allowing repeated opening without lost hardware. A 150 mm lead exits the case ready for soldering or connectors. The wires carry no polarity markings, so verify orientation with a multimeter before powering the load. Over-tightening the screws can compress the gasket unevenly and compromise the seal.

Points forts

  • Waterproof construction with rubber gasket protects batteries in wet conditions
  • Holds three AA cells delivering approximately 4.5 V for portable projects
  • Potted power switch and rubber-boot on/off switch resist moisture ingress
  • Captive hex-nuts and four machine screws allow repeated assembly and disassembly
  • 150 mm lead cable provides flexible wiring without polarity markings

Caractéristiques

TypePrototyping Products

Questions sur cet article

What are the overall dimensions of the battery holder including the machine screw ears?

The case measures 63 mm long, 77 mm wide and 20 mm deep when the screw ears are included.

How is the on/off switch mounted and what is the common assembly mistake?

The switch is potted into the case with a rubber boot; the error is tightening the four machine screws before the gasket is fully seated, which can break the seal.

When should the rubber gasket be inspected or replaced to keep the holder waterproof?

Check the gasket each time the case is opened and replace it if it shows cracks, flattening or debris that would prevent a tight seal.

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