18 Feb
2015
18 Feb
'15
12:02 a.m.
On 14 February 2015 at 16:41, John Foust <jfoust at threedee.com> wrote:
They consume about 18 watts and have claimed life
expectancies
in the 30,000 to 50,000 hour range.
But, is this the kind of life expectancy where they include the hours
when it's also powered off? Because that's what I have seen for some
early LED lights - 20,000 hours total lifetime if you used it only 2.5
hours a day.. the rest of the day was included in the life time claim.
Real life expectancy was thus only a bit more than 2000 hours, less
than three months, which turned out to be pretty accurate in practice.