This low ost battery pack is designed to be the only battery pack you'll need for your maker projects. Whether you are sewing LEDs to a shirt, making circuit crafts with pipe cleaners or adding LEDs to LEGO.

COMPACT DESIGN - PCB measures only 24mm X 24mm

• ON/OF SWITCH - Save on batteries with the ON/OFF switch

• PERFECT FOR SMALLER FINGERS - Large switch and power terminals make it easier to sew or connect with using your preferred materials.

• LEGO COMPATIBLE - Designed to snap onto LEGO

• COLOR CODED - Positive is marked RED and Negative is marked WHITE making it easy to troubleshoot your circuit.