Energizer 13W LED 2D 4-Pin Bulb GR10q - Cool White 4000K Non-Dimmable

The Energizer 13W LED 2D bulb is a direct replacement for compact fluorescent 2D lamps in existing GR10q 4-pin fittings. The looped tube design produces 1500 lumens of cool white 4000K light from a 13W LED source, replacing CFL equivalents that consumed 28W or more. The 4-pin GR10q base fits standard 2D bulkhead fittings and ceiling luminaires common in commercial corridors, stairwells, utility rooms and outdoor covered areas.

Designed for utility and commercial environments where consistent, neutral white light is needed across wide areas, the 2D form factor distributes light evenly across the full diameter of the bulb rather than concentrating it in one direction. The 4000K colour temperature sits between warm white and daylight, providing clarity without the yellow cast of warmer bulbs or the harshness of 5000K+ daylight sources. This makes it suitable for task-oriented spaces including plant rooms, service corridors, commercial storage areas and external covered walkways where colour rendering is less critical than visibility.

The non-dimmable LED driver inside the bulb simplifies installation in retrofit applications — the bulb works on standard mains voltage without requiring dimmer compatibility checks or ballast removal. The rated 30-year lifespan claim on the packaging assumes average use of 2.7 hours per day, translating to approximately 30,000 hours of operation. The flat profile of the 2D loop keeps the overall fitting depth low, making it suitable for bulkheads with shallow backboxes or low-clearance ceiling voids.

Does this bulb require ballast removal when replacing a CFL 2D?

No. The Energizer LED 2D is designed as a direct retrofit for existing GR10q fittings. The LED driver is built into the bulb itself, so it works with the standard mains supply. If the existing fitting has a CFL ballast, it can remain in place — the LED bulb will operate independently of it.

What CFL wattage does this replace?

The 13W LED output of 1500 lumens is comparable to a 28W CFL 2D bulb. The exact equivalent depends on the efficiency of the original CFL, but this LED provides approximately half the energy consumption for the same light output.

Is 4000K suitable for residential use?

4000K is cooler and more neutral than the 2700K-3000K warm white typically used in living spaces. It works well in utility rooms, garages, workshops and bathrooms where task lighting is prioritised over ambient warmth, but may feel too clinical in lounges or bedrooms.

What is the physical diameter of the bulb?

Standard 2D GR10q bulbs are available in multiple diameters (typically 16cm, 21cm, 28cm). The packaging does not specify the diameter for this model. Measure the existing CFL bulb before ordering to ensure the replacement fits the luminaire housing.