I bought one of these from woot a couple months ago. I immediately noticed that the red LEDs stayed on very dimly when the light was supposed to be off - which means that they were drawing current and draining the batteries.
I returned it to Energizer hoping to get a warranty repair/replacement and instead they just mailed me a check for the replacement value [...].
I really liked the headlamp when it worked (two nice bright white settings, two red LEDs, one green LED, spot or flood mode with the flip-up lens etc) - so I bought another one (from [...] through Amazon).
Well, the new one showed up last week and seemed to work great! All of the LEDs were off when the light was off, so I assumed I'd gotten a "good" one - until the next morning when my batteries were completely dead. I put in new batteries and measured the current draw with an ammeter (I design electronics for a living so this is no big deal to me) - this thing draws 38 milliamps when OFF. At that rate, a new set of batteries will be completely dead in 3 days without the light ever having been turned on.
Maybe some of them work and I just got two duds in a row, but clearly their quality control is horrendous and I won't be buying another. I'm really disappointed by this, because otherwise this is a really cool product.