Bests & Worsts Reviews from Amazon

Like many others, I bought these at Costco. All 3 worked fine out of the box. I set them off to the side for a couple a months, and when I tried to use them, all three had depleted the batteries. I checked the switch with my digital VOM, and even when it's switched off it draws current. Here's how you can test to see if yours is like mine. 1) Turn on the flashlight. 2) While the light is on, unscrew the base until the light goes out. 3) Screw the base back in. You'll notice that the light doesn't come back on. This is because it's not a physical on/off switch, but a contact switch that tells a logic circuit whether to turn on or off. The logic needs current to know what's happening, so it's always drawing current from the batteries, even when the LED light is off. Dumb dumb dumb design for something that you really WANT to work in an emergency. If they'd made it with a true on/off switch rather than having a contact switch with logic circuitry, it would've been great. Instead, they designed something that is constantly draining batteries.