Short Life - Already Done
580251
Purchased this vacuum in May and at first it was working great. It's now August and it's gone caput. I don't know how or why. Ive cleaned the filter and all but when I vacuum all the dirt just spits out the bottom. Nothing is being picked up. I've only had it two months but I'm very disappointed. I'm tired of buying vacuums
3069674
See edit below:  Fits correctly and works well.
Life is good so far, can't tell the difference from factory one.
Looks to be high quality fit and finish.
EDIT after using it less than the three year warranty period
battery refuses to take a charge. Having a three year warranty listed
in discription is useless if there is no way to exercise that when the unit
will no longer function in any way. Was fine for about two years or so.
The OEM factory battery is still going strong so the camera and charger work.
are working correctly. Having a cheap spare was a bad idea.
1943648
What more can be said?
Had an identical unit that worked for years....this one, not so much.
VERY disappointing. Good while it worked, BUT died way too soon.
4765840
Not much to say here, as mentioned in the title, I bought this USB less than a month ago, and it already died with minimal usage. Used less than 10 times. Today upon plugging in, the drive did not show up, but instead gives the message "Please insert a disc into the drive." Suspected it was probably the issue with drive letter, but it turns out false. Tried on several computers, same result. Conclusion: it died. Clearly Unacceptable.
3391290
Very short lifespan. Designed to prevent replacement of a rechargeable battery.  Bought several and they each started fading between 3-4 months.  They all quit between 4-6 months.
4154441
I'm already ready to replace these. I surprised they went this quick though.
1017813
Seemed good for the short time I used. Changed configuration tho and didn't need more than a week that I used.
2124181
Ordered these for replacement in an overhead fan light. These fit in perfectly and even matched the color of the existing bulbs.

*Edit* ...but they all failed after about 3 months. That's way too short of a lifespan for an LED bulb. Others have mentioned an overheating issue and my lamp did have a glass cover around the bulb. That may have contributed to the overheating, but it's definitely a design flaw for most normal usage of light bulbs.
2332566
These appear to only last about 8 months.  I bought the second one 08/2014 thinking that the first one was just a dud.  Sure enough the second one just died on me too.  I'm trying a different brand now.
3930481
This is an o.k. product.  Could last a little bit longer.
3130201
Replaced for faulty one.  Thus one failed also after short use. Won't buy again
3255301
I like the lighting effect, but life of bulb is too short.  I use this for kitchen downlighting and have to replace @ 9-12mo intervals.
2923652
I purchsed several of these, one for an immediate replacement in a fixture I had installed about 18 months ago -- far less than 4000 hours of use. The web site for this brand indicated 4000 hours (I know that the usual definition is: "from the total population, half of them are dead at 4000 hours"). So, I shall have to wait to pass judgement on the "life" of this brand, but meanwhile, function has been restored and I have an ample supply of spares.
2274427
Bought 2.  One has already died...  Both are used inside.  Need to see when I purchased and if still under warrenty.
649691
Bought these in June, 2015 and here I am again in February 2016 because one of the batteries in them is dead already. They worked fine, easy to program etc etc. but geez you'd think it would last more than 9 months.
737324
Brighter than the stock OEM incandescent bulbs.  What I really like is how they have a much shorter ramp up to full brightness compared to the OEM bulbs.  They really pop on!  Plus, I will probably never have to change them for the life of the car, fingers crossed.  I am running an electronic flasher relay so no need for inefficient and heat producing resistors.

UPDATE: One of the bulbs died after 9  months.  Paid to ship it back and get a new one.  Just before the 12 month mark the other one died.  Seems to be the tolerances on the black plastic base.  The bulb looses contact and stops working.  Tap it and it lights up only to die seconds later.  Tried a couple things to make it work but ended up going back to incandescent bulbs.  Really not impressed, for the price and the hype about LED life they both died in less than 12 months.  Would have cost me as much in shipping for 2 warranty replacements as it did to buy them new.
1947654
The toner was delivered quite rapidly; important when you're running low.  It works fine so far.  I'll update with useful life later if it runs short.  I'm giving it a preliminary 4 stars.  I'll upgrade to 5 (or downgrade) depending on how long it lasts.

Update:  After a year, it's finally running out.  This is comparable to the genuine HP cartridges I used previously. Upgraded to 5 stars.

Update II:  Second cartridge died after only 3 1/2 months.  Don't know why the variability. Downgraded to 3 stars.