doc d.

I can't tell whether the sales people just have difficulty with English, or just don't know anything about the products they are selling. I purchased two LED light bulbs that were advertised as 9W devices. When received, they consumed less than 4W when driven by 12VDC and the full wave bridge rectifiers were only operating in one direction so clearly defective. Both lamps exhibited the same failure mode.
Customer service was quick to ship a new set but did not send me any tracking information. But in due time (16 or so days depending on when you think they actually shipped) they arrived. This time the rectifiers work but the LEDs are still 5W devices claiming to be 9W bulbs. And when delivered, one of the bulbs had fallen apart (or was never fully assembled) and I could see that the LED substrate was labeled "5W".
In LED lamps, heat rejection is critical so a thermal path from the LED substrate to the heat sink is critical for long life. In this case there is no thermal compound or adhesive between the LED and the case so it is only held in place by tension on the electrical wires and the back of the lens keeps it from getting too far from the heat sink. This is not enough to keep it cool. While it is an interesting design, it is not a product that matches the claim for how much power it consumes or how much light it puts out. And customer service seems to be at a loss as to how to deal with this reality.

The appropriate solution is to change the product description on the web site to say that they are 5W LED bulbs and not 9W bulbs and to insist that the manufacturer provide test data to support the life projection.

I am impressed with the customer focused attitude, but I am not totally satisfied that they have a preemptive approach to quality. It is worth noting that this is my first order and it is only one item type among many that they carry so it is possibly an anomaly. But I will be more cautious and inquisitive before I order again.

For the product that was delivered, the price per lumen is comparable to very high quality Cree bulbs available off-the-shelf at Home Depot which come with a three year warranty and do not have a 16-day delivery delay. So there is not a huge price advantage for buying what is (in my opinion) a lesser quality product.