9W WW Standard Review

General Information

ID #146
Series N/A
Manufacturer Hyperion Tek (other LEDs from Hyperion Tek)
Fitting Type E26 (other E26 LEDs)
Light Type Globe
Height 95mm
Width 50mm
Weight 57g
Warranty 5 Years
Test Date 2013-06-03
Review Notes Noticeable & very annoying, high frequency flicker at 50/60 Hz (depending on mains frequency). Probably from poor rectification of the mains supply. Claimed life span of around 90 years, which we don't believe. Really bad CRI, bad power factor & was very dim. Fell way short of the vendors claims.

Shipped in blank packaging.
Price $15 (USD) from Amazon on 2nd of June 2013


LED Specifications

Claimed Measured Compared To
Watts 9W 2.2W @ 123V 64.7W @ 246V
Yearly Running Cost[?] $1.97 $0.48 $14.17
Lumens 750 lm 105 lm 811 lm
Efficiency[?] 83 lm/W 48 lm/W 13 lm/W
Lumens/Purchase Price 50 lm/$ 7 lm/$ 406 lm/$
Power Factor[?] N/A 0.45 1
Color [?] Warm White Warm White, 3165K Warm White, 2711K
Angle[?] 180° 147° Omni-Directional
Dimmable Not Dimmable N/A Yes, Trailing Edge
CRI (Color Accuracy)[?] N/A 63
Life 100,000 hours Not Measured 1,000 hours
Min/Max Voltage 85V / 265V 240V / 240V
Min/Max Temperature N/A / N/A N/A
Measured Temperature 47°C @ 25°C ambient
117°F @ 77°F ambient
158°C @ 25°C ambient
316°F @ 77°F ambient
Flicker Percent[?] 39% 11%
Flicker Index[?] 0.09 0.034


Link to manufacturer specifications at time of testing



Distribution Graph

Angle: 147° (±73.5° from bottom), Maximum lux:

Graph notes: Shows the intensity of the light when viewed from different angles. Normal omni-directional globes have a fairly constant output all the way around (excepting directly above). Downlights have a narrow range at the bottom in which the light is emmited, this determines their angle.


Spectrum Graph

Representation of color spectrum

Graph notes: Shows the breakdown of the LED light into its component colors. With short wavelength ultraviolet on the left and long wavelength infrared on the right. The green line represents the relative absolute strength of the light at each frequency, while the red line represents what the typical human eye would see. The human eye is most sensitive to green light, but much less sensitive to purples and deep reds.


Flicker Graph

Graph of measured flicker

Percent: 39%, Index: 0.09 (lower is better in both cases)

Graph notes: Shows variation in light output over 1/10th of a second, with relative light output on the Y axis and time on the X Axis. Measured with a photodiode connected to an Oscilloscope. Ideally the yellow line should be flat. Low frequency high amplitude waveforms mean there is a possibility of noticeable flicker, but sensitivity to flicker varies between people. [More details about LED flicker]


Disclaimer: While every effort has been made to ensure the accuracy of these results, each measurement carries an inherent degree of uncertainty and error. Safety and EMC compliance of products to regional or international standards have not been verified unless noted as an ENERGY STAR® LED Lighting Facts, or SSL Quality Scheme certified product. Retailers and importers selling unmarked or unapproved electrical goods can be fined or imprisoned. Mains supplied downlights require installation by a licensed electrician.