Are you looking to power motors and servos with your LEGO® compatible builds? 3D print a battery case for LEGO® compatible robotics projects! This is 3D printed 8x8 LEGO® compatible box that contains a 3xAA battery pack. The box is comprised of four pieces that snap-fit together. It features studs and tubes that can attach to either side of LEGO® compatible bricks. The battery pack features a 2.1mm DC plug.

3D Printed Battery Case

The battery holder features a 2.1mm barrel jack for connecting devices. This is perfect for powering the Adafruit Crickit for Circuit Playground Express and Adafruit Metro M4. There's also plenty of peripherals that use 2.1mm DC jacks as they are standard. For different connections, cut and solder up a custom plug connector that you need for your project. 

Top down view of a Adafruit CRICKIT for Circuit Playground Express with a circular board connected.
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A Black woman's manicured hand holds a round microcontroller with lit up LEDs.
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Battery Parts

You'll need three double A batteries, a 3xAA battery holder, 2x M3 x 5mm flat head screws and the 3D printed mount. The hardware and accessories are linked below.

2 x Metric Flat Head Machine Screws
M3 x .5 x 5M – Two short screws with flat head for flush mounting
1 x Microtip Super Glue
Starbond Glue with Extra caps and Microtips, 2 oz.
Angled shot of 3 x AA battery holder with 2.1mm plug. There are three AA batteries in the holder.
Here's another addition to our growing family of AA battery holders. A holder for three (3) AA batteries!...
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Angled shot of 3 AA batteries.
Battery power for your portable project! These batteries are good quality at a good price, and work fantastic with any of the kits or projects in the shop that use AAs. This is a pack...
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This guide was first published on Aug 15, 2018. It was last updated on Mar 08, 2024.

This page (Overview) was last updated on Mar 08, 2024.

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