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Single-tube 13W GX23 fluorescent bulb, cool white finish

Ushio

Ushio CF13S/841 13W GX23 4100K 800lm fluorescent bulb

SKU CH-XPAA-9E10J

Compact fluorescent bulb delivering 800 lumens at 4100K cool white from 13 watts with a 10,000-hour rated life

  • Power rating13
  • Light output800
  • Color temperature4100K
  • Lifespan (hours)10000
  • Color rendering85
  • Product typeFluorescent Bulbs
  • Bright 800 lm output from only 13 W power draw
  • Cool-white 4100 K light suits task and office spaces
  • 85 CRI renders colours accurately for everyday use
  • GX23 2-pin base fits compatible compact fixtures directly
  • Rated 10 000 hours life reduces replacement frequency

Ushio CF13S/841 compact fluorescent

The Ushio CF13S/841 is a 13 watt fluorescent bulb delivering 800 lumens at a 4100K colour temperature. Its GX23 two-pin base fits compatible fixtures in offices, retail spaces and residential task lighting. A colour rendering index of 85 provides acceptable colour fidelity for general illumination. Rated life is 10000 hours under normal switching cycles.

Low heat and silent operation

Fluorescent technology runs cooler than incandescent equivalents, reducing fixture heat load. The lamp operates without audible ballast hum when paired with a quality electronic ballast. Power draw remains a steady 13 watts throughout its rated lifespan. No moving parts means completely silent performance in noise-sensitive areas.

Replaces 13W GX23 CFLs

This bulb directly replaces any 13 watt GX23-base compact fluorescent with the same single-tube, two-pin configuration. The upgrade is worthwhile when an existing lamp has dimmed, flickers or has reached its 10000-hour rating. It does not suit fixtures requiring four-pin bases, higher lumen output or different colour temperatures. Shoppers needing dimmable operation or instant full brightness should consider alternative technologies.

How it compares

Measured against everything we stock in General-Purpose & Specialty Bulbs, at today’s prices. Recalculated every night.

Price $3.99
Cheaper than about 94% of the 1,791 comparable items (median $17.99).

Specifications

Product
Brand nameUshio
Product typeFluorescent Bulbs
Display
Light output800
Power
Power rating13
More details
Color temperature4100K
Lifespan (hours)10000
Color rendering85

Questions about this item

How do I install the CF13S/841 bulb with its GX23 base, and what step is often missed?

Align the two pins on the GX23 base with the socket slots, push straight in until the bulb seats firmly, then give a slight twist to lock; the step often missed is confirming the twist engages the retaining clips so the bulb cannot work loose.

What maintenance or replacement will the CF13S/841 need during its 10000 hour rated life?

No scheduled maintenance is required; the bulb is designed to run until light output drops or it fails to start, at which point the entire CF13S/841 unit is replaced.

At what point does the CF13S/841 hit its limit during continuous operation?

The rated life of 10000 hours is the primary limit; after that lumen output typically falls below useful levels and the 85 CRI colour quality may shift noticeably.

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