I've gotten 11+ hours out of these if i don't let the wax spill out or use the knockoff candles. - UCO Candles

I've seen multiple reviews around of people complaining about wax going everywhere and I've never had that happen in the 10+ years of using these in UCO lamps. So I'm not sure if they are using these in knock off lanterns with a different design, or if they are handling them so the wax spills or what. But just like any candle you are not burning the wick, but the vapor of the wax as it melts. So if let the wax spill you are essentially spilling out the fuel. Used properly in the lamp you get a small puddle, don't spill that and it will burn for 9+ hours.

Use mine for winter camping as a safer way to generate some extra heat without fear of burning my tent or monoxide poising. I also like it as a means of having soft ambient light without the need for a ton of batteries. I also keep a backup in the car during the winter as a part of my emergency winter kit.

Can't beat Camp savers sale price on three of these for 27 hours of light and hours of gentle warmth.

This review was written in the old system and had content requirements that are different than reviews written today.