My mainstays for longevity are:

  • Standard Mini Maglite with LED conversion
  • Gerber TriTac LED Light
  • Gerber Infinity Ultra
  • Petzl E+Lite headlight


I have a couple of others that use Luxeon Star LEDs and are ridiculously bright but these typically take at least 6 cells and aren't known for their battery life (though it's still better than incandescent)