I see this thread hasn't had any activity in a while. Just thought this might interest you Wex-C150 owners out there. One of my bars died. It was ~18 months old. I took it apart and found that one of the transformers had shorted. So I email Welthink in China. I had a response from Welthink USA within 5 hours. After some back and forth they asked me to ship it to them in VA. Cost me $45 including insurance. Within a day of receiving the light they determined that not only had the transformer gone but it took a number of the LEDs with it. They sent me a spanking new light the next day! Total down time was about 10 days and that's because I dicked around with it for 2 days and shipped regular post which added 4 days. Great customer support. Nice to have a company stand behind their product, eh?!