COB LED GU10 5W Spotlight Review

General Information

ID #216
Series N/A
Manufacturer Ebay seller: australiandoll (other LEDs from Ebay seller: australiandoll)
Fitting Type GU10 (other GU10 LEDs)
Light Type Downlight (PAR)
Height 60mm
Diameter PAR16 (50mm)
Weight 44g
Warranty 2 Years
Test Date 2013-10-23
Review Notes Reasonably efficient GU10 but it also has the new worst CRI value seen to date. Has some high frequency flicker. As with many EBay lights performance claims have been exaggerated. Ships in a white box with no markings. Carries CE approval and RoHS labels, no RCM or C-Tick labels reflecting Australian approvals. Claimed light source: Epistar Chip. Dimming tested using leading edge dimmer.
Price $15 (AUD) from Ebay seller australiandoll on 20th of October 2013


LED Specifications

Claimed Measured Compared To
Watts 5W 4W @ 243V 50.2W @ 242V
Yearly Running Cost[?] $1.10 $0.88 $10.99
Lumens 410 lm 271 lm 498 lm
Efficiency[?] 82 lm/W 68 lm/W 10 lm/W
Lumens/Purchase Price 27 lm/$ 18 lm/$ 144 lm/$
Power Factor[?] N/A 0.81 1
Color [?] N/A Warm White, 3076K Warm White, 2737K
Angle[?] 120° 62° 33°
Dimmable Not Dimmable Fair Yes, Leading or Trailing Edge
CRI (Color Accuracy)[?] 85 60
Life 60,000 hours Not Measured 2,000 hours
Min/Max Voltage 180V / 240V 220V / 240V
Min/Max Temperature -20°C / 55°C N/A
Measured Temperature 66°C @ 25°C ambient
151°F @ 77°F ambient
192°C @ 25°C ambient
378°F @ 77°F ambient
Flicker Percent[?] 85% 9%
Flicker Index[?] 0.1 0.029


Link to manufacturer specifications at time of testing


Dimming measurements

Graph notes: Dimming performance can be highly dependant on the type of dimmer, the number of lights in the circuit and other factors. Results in your house might vary. Mouse over the graph for more details. Position 10 = Not dimmed. Position 1 = Fully dimmed.



Distribution Graph

Angle: 62° (±31° 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: 85%, Index: 0.1 (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.