Got the ultralight around 4 years ago and ended up...

Got the ultralight around 4 years ago and ended up not using it for almost 3 years as my other lighting options were working fine. Then I finally ended up using it about a year ago and it was working well, for 3 months, until I dropped the battery. Now I could no longer adjust the brightness as the knobs had come loose and it was set to the lowest brightness. Still, it was working. Went to Yankee Dental and bought a new battery. They said they could see if they could repair my old battery as well and took that. When I got the old and new batteries back, I was told that my old battery could not be fixed. Furthermore, it now did not work. The new battery worked for 2 weeks and suddenly no more light. Before the light stopped working, it started getting really hot. When the light stopped working, I thought it was the battery and I called for a replacement. Still, the light would not work. I called again and had to pay to replace the wiring. Still, no light. At this point I felt like a sucker and was so frustrated that I didn't bother calling them back. It has been several months since then that I am writing this review. My colleagues have lights from other companies and certainly the customer service has been better. This company took my money on a light, a battery, a replacement battery, and replacement wiring and they are all useless waste of money as none of it works. If I could do it over again, I would shop elsewhere.