bright lightbulb

Available lumen values in these listings include 100, 200, 415, 760 and 800 lumens — a range from very low output (100 lm) up to about 800 lm, which corresponds to a typical 60W-incandescent equivalent.

Many LED listings advertise 60W-equivalent light output while using about 8.0–9.5 watts. Other listings show incandescent-style ratings of 40W and 25W with actual usages listed as 40.0 W and 25.0 W, respectively. One cordless LED listing shows an actual power draw of 12 watts.

Most standard bulbs use the Edison medium screw base (E26). Common shapes include A19, A15 and A21. One cordless/portable option lists a non-removable integrated bulb instead of an E26 base.

Some cordless bulbs use replaceable AAA batteries for portable or stick-on lighting. Rechargeable LED options include a built-in battery backup that charges while installed and can provide multiple hours of illumination and a flashlight function during outages.

A dusk-to-dawn bulb has a built-in light sensor that automatically turns the bulb on at dusk and off at dawn. Installed in an outdoor E26 fixture, the sensor controls operation without needing apps or manual scheduling.