Longest lasting stand-alone battery powered LED light

[Svenn]

I really like the LED dome lights with their own batteries, in case my own electrical system fails... but I can only find ones that last 20 hours... anyone know any that last longer?

 

[sushidog]

Here's an inexpensive 50 lumen one that they claim lasts 31 hrs on 3 energizer max batteries, but I would use rechargeable ones. Buy 2 sets so you always have a fresh set waiting.

https://www.amazon.com/Energizer-Pr..._SR160,160_&psc=1&refRID=J3T1J7PDPJV69X1B0JA2

Chip

 

[sushidog]

This one only makes 20 lumens but they say it lasts about 100 hrs on 3 leds. It just depends on how much light you need. I don't think you can read by 20 lumens but it would make a good night light.

https://www.amazon.com/dp/B00GD8OKY0?psc=1#Ask

Chip

 

[GypsyDogs]

I got one of these for night/emergency/repair purposes.  I ADORE it.  Is really well balanced and the different levels of light and spot/flood beam is great.  And I can charge it off any powered usb port. It usually lives strapped around the passenger side head rest. So I can use it for interior cab lighting if I need also.

Foxelli HeadLamp

 

[jimindenver]

We use to use the Harbor Freight free blue pucks before we went LED in the trailer. They last forever it seems on three triple A's and between the magnet and hook can be put anywhere.