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Now, in looking further into fuel cells, we learned they're not just about looks:

• They burn cleaner than regular old candles.

• They are less of a fire hazard than wax candles: should they tip over, they stop burning.

• Each tealight-sized cell burns for eight hours.

• They fit into standard votives like a tealight would.

The only drawback that's really jumped out at us is that fuel cells are generally sold in extremely large quantities, as they're marketed more toward the restaurant industry than to individuals. One such seller is here, but there are many others out there, too.