About how many hours of light will the batteries give?
876627
These are not designed for continuous lighting, but for intermittent and for a couple hours at a time. If left on continuously, the batteries will last around 25 to 30 hours. These had been considered for a commercial display case but were turned down due to having to change the batteries every 3 days.
397510
I used regular batteries and have used for 3 nights - about 4 hours - in a row. still bright. no problems.
319406
With the included 1500ma batteries fully charged on a smart charger I get about three hours of very bright light ( by solar light standards). A full day of bright sun (November in MN) will charge the batteries to less than half charge. Very over price for what they are. Only taxes give less bang for your buck.
1866347
My batteries will last approximately eight to ten weeks with my normal usage. That usage will vary with each individual. I used mine hunting, working on my old car, getting the dog in after dark. The batteries are only fully charged at the beginning so don't expect them to be 300 Lumen all the time. I have really enjoyed using this head lamp.
208553
I would say the battery life depends on the display settings. With full illumination, I think it's about 6 hours.
445569
Hard to say. How big are the batteries? How much ambient sunlight does your location get?
1877629
Yes, assuming you're battery has around 100 RC (amps reserve capacity). The lights use 1.5 amps each per hour your battery should last around 5.55 hrs assuming a full charge and a good battery to full discharge. This is theoretical of course and many factors could lower that and likely will. Also make sure your fuses and wires are sized for the amps.
1716907
around four hours if you put the brightness button to a minimum since it's very bright anyway.
1839563
this unit takes 6 AAA batteries. battery life is, obviously dependent on usage. my father uses it for about a half hour to 45 minutes, once per week and it has lasted a couple of months, but light output has dimmed. it is ok as a supplemental light but I wouldn't use it as a primary source
1699242
The fact they are LED they will not draw as much electricity as a luminescent. With fresh batteries I have had the lights on for 4 hours. The next time I used them for two hours with no dimness of the lights.
2145333
That's going to depend on the quality if your batteries.. I would guess you should get atleast 3 hours and that's cheap batteries.
428002
If they are given a good half hour charge before the lights are turned out, they glow for very long time. Upwards of an hour and a half to two hours.
862715
Burn time on a full charge battery is about 2-3 hours if set in the on setting. Having said that, with the light set in the motion setting it will last the night. It also depends on how long you have the motion timer set for. I don't know how many lumens it puts out but I have one set up to light up my full size pick up and it is quite bright and covers the entire truck.
2173730
not long. leds are supposed high efficiency but batteries were dead too soon. i guess i´ll have to buy rechargeable batteries.nonetheless, the lights are very useful and very practical
1600763
I believe that at 100 continuous Lumens you will find battery life around 10 hours or less!
1923437
The batteries that came with it lasted about 50 hours for me. Then the light started to get really dim.
319062
8 hours of direct sunlight is the best, but I think it would light with 6 or 7 hours, It is a really good spotlight, I have had many but this is the best by far!