[bert]

.....I use these bulbs in Almost all my lights at home.....

Do they provide more lumens per watt than incandescant?

I'm outfitting a truck and need good light for reading. I have an inverter and need to have max light with least amps.

[Red Badger]

Light output is fine. Plenty of lumens to spare, but I wonder if the vibration might shorten their life span somewhat........

[listenhillary]

Not on the market yet.

Seoul Semiconductor squeezes 240 lumens into "brightest" LED
SSC's new P4 LED product emits 240 lumens at 1A

Seoul Semiconductor has plans for 135 lm/W by 2007 and 145 lm/W by Q1 2008 (Almost 10x the efficiency of incandescent)

In comparison, fluorescent manages 70 lm/W and incandescent pulls a mere 15 lm/W.

http://www.engadget.com/2006/12/12/seoul-semiconductor-squeezes-240-lumens-into-brightest-led/

[patton]

You can get them in 12V, which is a huge energy saving over 12V-120V inverter - 120V bulb.