11W LED Bulb Review

General Information

ID #100
SKU 1303
Series NRG Saver
Manufacturer NRG (other LEDs from NRG)
Fitting Type GU10 (other GU10 LEDs)
Light Type Downlight (PAR)
Height 125mm
Diameter PAR16 (50mm)
Weight 132g
Warranty 3 Years
Test Date 2013-05-02
Review Notes Claims "1 to 1 brightness to a 50 watt halogen dichroic bulb". On the Ebay seller's web site it was claimed that the light was 60 degree angle. But on the box that arrived it was labelled as 40 degree (but tested as 34 degree).
Price $24.90 (AUD) from Ebay seller worldofleds on 30th of April 2013


LED Specifications

Claimed Measured Compared To
Watts 11W 11.7W @ 245V 50.2W @ 242V
Yearly Running Cost[?] $2.41 $2.56 $10.99
Lumens 630 lm 555 lm 498 lm
Efficiency[?] 57 lm/W 47 lm/W 10 lm/W
Lumens/Purchase Price 25 lm/$ 22 lm/$ 144 lm/$
Power Factor[?] N/A 0.92 1
Color [?] Warm White, 3000K Warm White, 3135K Warm White, 2737K
Angle[?] 40° 34° 33°
Dimmable Yes, Leading Edge Below average Yes, Leading or Trailing Edge
CRI (Color Accuracy)[?] N/A 74
Life 50,000 hours Not Measured 2,000 hours
Min/Max Voltage 220V / 240V 220V / 240V
Min/Max Temperature N/A / N/A N/A
Measured Temperature 71°C @ 25°C ambient
160°F @ 77°F ambient
192°C @ 25°C ambient
378°F @ 77°F ambient
Flicker Percent[?] 22% 9%
Flicker Index[?] 0.06 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: 34° (±17° 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: 22%, Index: 0.06 (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]


LEDs in this Series

Name Price Watts Lumens Efficiency Color Angle Fitting
11W LED Bulb $25 (AUD) 11.7W 555lm 57lm/W Warm White, 3135K 34° GU10
12W 'The Developer' GU10 Downlight Kit $30 (AUD) 8.4W 520lm 60lm/W Warm White, 3321K 33° GU10
9W LED Bulb $19 (AUD) 7.6W 425lm 70lm/W Warm White, 3062K 34° GU10


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.