LEDs draw very little power so they can run for a long time on a small battery without any issues. There is no need for a bulky wall transformer and a wall plug to light your project. When LEDs get toward there end of life they fail by dimming over time, rather than an abrupt failure of incandescent bulbs.

Can LED lights work without batteries?

LED lighting has widespread appeal due to energy-efficient output and low cost of manufacturing. … The Lumir C LED lamp joins the likes of GravityLight and SALt lamp as an eco-friendly alternative, illuminating without the need of sun, batteries, or electricity.

How are LED lights powered?

Most LED strips are configured to operate at 12V or 24V DC. When running off of a standard mains supply power source (e.g. household wall outlet) at 120/240V AC, the power needs to be converted to the appropriate low voltage DC signal. This is most frequently and simply accomplished using a DC power supply.