light up lego

Power varies by set: small LR41 button cells, AAA alkaline cells, or rechargeable lithium‑ion modules (used in interactive sets). Some sets include batteries or a charger, while others list required batteries as not included.

Light bricks provide localized illumination or projection for model details. Interactive smart modules add motion‑ or app‑triggered lights and sounds and can be triggered by tags or a companion app to create dynamic effects.

Activation varies by feature: light bricks typically use a push‑button; vehicle headlights may be controlled by a remote or a smart‑device app; interactive modules are triggered by placing the rechargeable module on tags or using the companion app.