Yikes!
On a better note, a few days ago I ebay'd a HK 4 x 1W LED warm white 3000~3500K 60º 340Lm 350ma 12V MR16 bulb for $8.58 including S&H.
The 3x1W and 4x1W 12V E27s had less impressive numbers related to ºK, Lm/W, and 2Θhalf.
I will let you know what I think in about 10~12 days, if someone reminds me.
G-
Do let me know how well they work out, are these the same that hooks right into the track lighting? Lot Cheaper than buying from online.
Bruce S
Update / hijack about my 12V AC/DC ebay bulb.
The light output appears kind of narrow for 60º, but not too bad.
The color is very nice.
Draws 0.35A.
The lamp was on when I connected it to the battery, and it makes a considerable spark when connected.
I am a bit concerned with the heat.
It looks similar to Damon's open frame bulb, with a forward (not touching) plastic lens. The open frame is AL and fairly heavy.
15 minutes operating, pointing straight up in an open table lamp, from a very old 7AH SLA at 12.1V at the end of the 15 minutes...
Non contact thermometer.
Ambient temp, 68.8ºF.
Lens, 127.8ºF.
Temps in the base, possibly inside, outside, every side, 131.0 to 133.4ºF.
After an hour, I managed to get a high reading of 135.5ºF.
G-