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Thread: A new version of the famous Favourlight lantern - 500 lumens?

  1. #1

    Default A new version of the famous Favourlight lantern - 500 lumens?

    I saw this lantern http://www.budgetcamping.com.au/shop...asp?prodID=536 which looks like another Favourlight rebadged lantern (aka Rayovac)
    But interestingly it claims to use Cree Q4 (instead of 3 x Nichia 1 watt as we all know) and 500 lumens output for 50 hours!
    What do you guys think?
    Last edited by NickBose; 10-18-2011 at 02:59 AM.

  2. #2
    Flashaholic* mvyrmnd's Avatar
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    Default Re: A new version of the famous Favourlight lantern - 500 lumens?

    The only way it's hitting 500 lumens with a Q4 bin emitter (in whichever form it takes - I'll forego my normal rant about bin codes) is if there's three of them. If there were, and they were driven at the power required, it'd be a 9W (or more) lantern.

    Also you may want to fix your link - you post is displaying the HTML, rather than a clickable link.

  3. #3
    Flashaholic*
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    Default Re: A new version of the famous Favourlight lantern - 500 lumens?

    Those specs are bull. A single emitter in the Q4 flux bin isn't going to emit 500 lumens without blowing or having some really good active heatsinking. I need a break from writing this paper, so let's look at these claims.

    The datasheet from Cree says that even an XP-G in the R5 bin is only expected to get 463 lumens at 1.5 A (taking a Vf of 3.55 V at that point, we're at ~5.3 W). Imagine how much more current something in the Q4 bin would need to draw.

    On to the runtimes. 3 D cells, let's assume that they're 1.5 V, 12 Ah. That would give us a total of 54 Wh, excluding losses due to drawing a high current. Even if we assume that it's drawing 3 W as opposed to 5 W, that's still only 18 hours. It would have to draw ~ 1 W in order to have 50 hours.

    Seems to me that they're over-stating its capabilities in everything but weight.
    Finning does help dissipate heat. This is why the fins are removed before cooking fish. Otherwise it will throw off the heat and not reach the proper cooking temperature. --Duglite

  4. #4

    Default Re: A new version of the famous Favourlight lantern - 500 lumens?

    Can't fix the bloody post. This forum backend is really crappy
    Edit: finally
    Last edited by NickBose; 10-18-2011 at 02:59 AM.

  5. #5
    Flashaholic* LEDAdd1ct's Avatar
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    Default Re: A new version of the famous Favourlight lantern - 500 lumens?

    I am not familiar with this model, but I agree with everything stated above.

    I doubt Favourlight would publish those specs. I am guessing the seller or his dealer is monkeying around...
    "...and the diode multiplied and grew in brightness. And God saw that it was good."

  6. #6

    Default Re: A new version of the famous Favourlight lantern - 500 lumens?

    I noticed that Favourlight has updated its spec on previous so-called "400 lumen" 6xD lights to 300 lumen output despite the photo on the same page still shows a printing of 400lumen on the lantern itself
    http://favourlight.com/1/#products/PLN0C6D003

    The light was posted here 6 months ago http://www.candlepowerforums.com/vb/...=1#post3610823

    Not sure if they changed the driver for longer burn time, or they did some serious measurement and decided to publish genuine output rather than just take the LED theoretical lumens and multiply them.

    (The famous 3xD 300lumen version aka Rayovac was also changed to 230 lumen)
    Last edited by NickBose; 10-20-2011 at 04:54 AM.

  7. #7

    Default Re: A new version of the famous Favourlight lantern - 500 lumens?

    Seems like Favourlight is switching to more accurate reporting. I reported another case here: http://www.candlepowerforums.com/vb/...%29-Downgraded

  8. #8

    Default Re: A new version of the famous Favourlight lantern - 500 lumens?

    I think this "500 lumen" is a clone of the famous Favourlight aka Rayovac Extreme. I found another one here with a more realistic tag of A$ 44.95 and boasting a "Cree Q5". The reason why I think it's a clone is the same store carries the real Favourlight at A$ 79.99. A difference can be spotted on the photo is the unrubberised area on top of the Favourlight is square while the clone is round


  9. #9
    Flashaholic* LEDAdd1ct's Avatar
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    Default Re: A new version of the famous Favourlight lantern - 500 lumens?

    Excellent catch! Additionally, the rectangular marks on the lid are different.
    "...and the diode multiplied and grew in brightness. And God saw that it was good."

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