Fresh lithium batteries have a slightly higher voltage and less internal resistance than alkalines, so they'll allow more voltage to reach the LEDs, which means nice bright light—while it lasts!

Some AA batteries fail faster than you'd expect, even from familiar brands. Consumer Reports breaks down the worst performers ...

The Surefire E2L AA Outdoorsman Is An Impressive Led Flashlight - On The Trail, In The Garage, Or In A Jam There's no more helpless a feeling than being broken down at night on the side of the freeway ...

At its brightest setting, the LED array in these flashlights can reach 90,000 lumens, a beam that can reach up to 3,280 feet, ...

You may have heard that LED flashlights using AA lithium batteries run hotter and die sooner. Is there any truth to this? The short answer: There could be an issue ...