We need six or so G9 LED lamps.
There are loads available (e.g. on Amazon) but mostly with few and/or mixed reviews.
Ideally, they be 5 to 7 watts, I'd like them to be about 4-5000 K - so cool rather than cold. And fit well - quite a few are reported not to be easy to actually push into the receptacles. Also, want to have them in about a week - not the indeterminate period common to those sourced directly from China - as so many are.
Any recommendations?
Can't you buy sackloads of these things locally?
Just plug them into your old phone charger with the highest voltage. I have a shopping bag full of old chargers if you want to collect them. PS: Anyone know the best lamp-holders to go with them?
OOPS don't watch the birdy:
The G9 lamp format is simply too small for LEDs other than very low power - there isn't enough surface area to dissipate much power and remain within the working temperature of an LED. What's even worse is G9 fittings usually restrict ventilation because the G9 halogens have to run hotter than they do in free air to achieve full life. I haven't looked for G9 LEDs, but I doubt anything more than 2W would last long. If the G9 fitting has some ventilation restriction which can be removed without reducing safety, then you should do that when retro-fitting LEDs.
Steer clear of G9 fittings when buying lights - they're a technology dead-end.
Since when have G9's ever fitted properly on the first attempt?
As for the LED verions of G9s I cannot recommend any. I have fitted a few and I disliked them. A pack of 10 40W halogen G9s is about £7 at my wholesalers and that is what I am sticking with for now.
None, other than "Caveat emptor". The G9s I bought on Amazon had nothing like the lumen output stated. And when I bought some more (from the same supplier as I wanted them to match), they were a slightly different colour!
It may be that you can get some with 400+ lumen output, but I would then be very careful as to whether or not they would fit a standard G9 fitting. There are some reports that the brighter G9 LEDs are slightly bigger than those with lower output - and those are already bigger than G9 halogens.
Thanks - yes would avoid in future but they were already here.
They are actually lamps on ceiling fans so, although possible to change, would be fairly expensive. Air flow is not a problem.
Oh dear... :-(
Thanks.
Or stock up on replacement bulbs ...
Our "above bathroom mirror" lamp had been dead for about 18 months then I finally decided to try an LED G9.
Went for the biggest one that would fit in the holder.
Can't comment on reliability as it's only been fitted for 8 weeks. Other family members do have an annoying habit of putting the bathroom light(s) on ALL the time regardless of whether it's required or not, then they leave them on so it's getting quite a bit of use.
One I bought has a 5 year warranty so if I get 5 years out of my £4.99 I'll be a happy chap.
One I bought was this one
Cheers Pete
How do you work that out? They look ideal for kitting out an old fridge for seeds.
And those have precisely what to do with my question?
Well Andrew gave you the technical side and I gave you the on hands side within a few minutes of each other:-)
Mind you an apprentice managed to swap a G9 lamp for a G4 lamp the other day.
Don't hold your breath waiting for a rational answer...
Tim
Not if the manufacturers (Cree and Philips Lighting) *finally* make good on their, now 2 1/2 year old, promises that the 280 and 303 Lumens per watt laboratory samples they'd announced to the trade press along with an estimated 18 to 24 month lead time for such "Lab Samples" to appear on shop shelves.
The best efficiency LED amps I've seen range from 70 to 100 Lumens per watt even now, some 6 months past the expected date for those promised
280 to 300 Lumen per watt lamps to enter the retail distribution chain.If you can hang on (another year or three?) for these high efficiency LED lamps, you can have 3W 900 Lumen output lamps that run cooler[1] than the current 2 watt 140 to 200 lumen lamps we seem to be currently stuck with. The technology is not a dead end (assuming the manufacturers finally commercialise their lab samples of 2 1/2 years back).
[1] The cooler running benefit of doubling and tripling the efficiency over the current 70 to 100 Lumen per watt lamps is significantly greater compared to say a doubling of efficiency of an incandescent lamp where some 97 to 98 percent is dissipated as waste heat for a standard 100W bulb and a doubling of efficiency in this case will only reduce the waste heat energy from, say 97.5% down to 95%, an almost unmeasurable drop in temperature of the light fitting itself.
Nearly a year ago I bought som 5W 600lm COB LEDs, so 120lm/W. Screwfix has som 'filament' (COB) lamps that do exceed 100lm/W.
It is disappointing that the 'promised' output hasn't yet arrived. I've enough spares to hang on for a couple of years or so (not had a LED fail yet
- oldest in frequent use is nearly 2), so will wait and see.
I'm just waiting for the day when I can get a CFL or LED to replace a standard 150 watt GLS. Or even 100w. Properly. That really does give as much light.
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