Well, these did. It worked right out of the box to my own surprise actually. But it may be possible they werent fully charged and therefore cant deliver the amps to drive the 10W LED for the FoC. I will try to charge them.
Yeah they typically have some charge, but many people have issues where they die not long after they try the saber out. It tends to be a source of disappointment, at least until they charge them fully.
If that doesn't fix your problem, it could be something else. In that case, Ultrasabers will be happy to help you out with your issue - they cover their sabers with a warranty.