11W(ish) E27 golf ball dimmable LED?

I have loads of 12v 50W halogens spots and the LED equivalent that is identically bright is 5W.

Simply go on amazon and get the highest daylight white dimmable E27 golf ball LED you can find.

"I seriously doubt you can fit a reliable 70W halogen into golf ball size "

Noting that the outside lights (a pair) in question have worked fine over the last 12+ years with, as far as I can tell, the original Homebase 70W golf ball halogens.

This seems to be reliable enough to me, despite your doubts.

Additional notes: the failing bulb had the globe detached from the base. The base had what looked like an everyday halogen light with two prongs fixed into the base. It makes me wonder how long the globe has been detached, and if it served any function apart from diffusing the light and keeping fingers away from the halogen bulb.

Cheers

Dave R

There are two factors to consider...

1. The light fittings ability to withstand heat from the lamp.
2. The lamps ability the satisfactorily cool itself, if an LED.

LED's are very susceptable to heat damage. Just a little heat, can dramatically reduce their working life, unlike halogen, or tungsten.

I swapped some 50w halogen lamps, in walllights, with their shades open at the bottom, closed base uppermost, for 5w LED's. They ran much cooler, but still only survived 12 months. I recently replaced them, but only after turning the fittings 180, so they were open at the top, hopefully allowing heat to rise and escape, so they run with a cooler base. The base is the important thing, where much of the heat is generated, and most susceptable to heat due to the components therin.

Thanks. This may explain why they don't seem to make high wattages in small form factors. These outside lights don't get a massive amount of use, virtually none in summer, but they are very useful in the winter for trips outside for various things.

Being a sealed waterproof fitting this is unlikely to aid cooling.

We shall see how we go!

Cheers

Dave R

I think you will struggle.

We have some wall lights 3 each in two rooms we especially like. They originally had 40W golf ball BC bulbs ( good, old fashioned ones).

Senior Management decided we needed to go green so I started hunting for suitable, dimmable, LED equivalents. It took years to find some which were suitable. Even now, whereas before, we sometimes dimmed the old ones for ‘mood’, either we don’t need the mood these days ;-) or they are just dim at full whack.

One positive, compared to higher power LED bulbs, they do seem to last longer.

LED bulbs outside seem especially short lived - even in sealed fittings.