Like most LED lights, they don't use as much power as the product description might suggest. They are NOT 25W each, but 16.5-17.0W. They draw about the same amount of current between 11 and 15V. I haven't tested above 15V, but below 11V they start to dim and draw less Electricity. At 11.0V it's about 1.5A and at 14V it's about 1.2A. They're bright enough though, probably about the same as a 42W halogen bulb. So you get about the same amount of light at 1/3 power. So if you have to leave the light on for a while, it won't drain your battery as quickly. They also don't heat up as quickly as halogen bulbs, so your reflectors won't break as easily (especially the clear plastic on the front shouldn't yellow as quickly as halogen bulbs). And if they really do last tens of thousands of hours, that saves you buying a replacement for the life of the car. I'll update my comment on brightness after actually driving at night. During the day it is difficult to see the difference in brightness. They fit well in my Dodge Ram 2500's mount, although it's a bit tight on the driver's side. There's no fan, it's a one-piece heatsink. I couldn't install them at first because they are NOT bipolar and won't work until I rebuild them. I had to wait about 3 weeks to get the sex change adapters but they arrived in the mail this week. If they burn out I will update the review.
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