how long would this light last if left on with fresh batteries?
1078265
Not sure, but I started using it in September and used it almost night till December without having to change the batteries.
1078266
that's a good question. i do not know as i have yet to do that test. i can tell you that from my understanding of LED lights, they take very little energy increasing your battery life. i will also tell you that my light works quite well for my needs.thank you -
165512
That depends--if you're asking how long it gives light as an under cabinet light, the answer is up to about five days of always-on, with it dimming noticeably for the last two. If you 're asking about its brightest light for tasks like illuminating reading or typing at a work station, I'd say around 40 hours before the light starts to dim. Inside a closet or pantry, where you turn it on, grab what you need, and turn it off--maybe a month. Runnng it constantly seems to drain batteries a lot faster than on and off use.
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.
2049671
the light can be set to stay on for up to 15 minutes when activated by motion. I have had mine over a year and have not had to change the bulb yet. I expect it to last several years.
1039285
More than 2 hours actually. I left mine unplugged running at max brightness overnight to see how long the battery will last. I was up for more than 5 hours before falling asleep and it was still running. Light at max wasn't as bright compared to when it was plugged in though. There's most likely a circuit preventing the battery from over discharging as it turns on then off for some time still before I plugged it back in.
1547435
It depends on what you're using it in . Some flashlights will use them up in 20 minutes others will last for 10 hours or more
179013
Depends how long you leave it on. If you leave it on all night, probably a couple of weeks. It gets dimmer as the batteries die.
675124
Roughly 6-10 hours depending on the light mode you use. Full Details: Using a full charged 18650 battery (3.7V 3000mAh), the beam from the flashlight (on the brightest mode) will stay very bright for about 2 hours. After that time there will be a slow decline in brightness over the next five hours or so. At the end of the 6.5 hours, the battery will probably be drained, with a voltage under load of about 3.0V. So even if you use the bright mode continually, you should get enough light to see your immediate surroundings (at least) for maybe five or six hours. Of course, to save on battery power, you should use the low intensity beam most of the time and that should get you about 10 hours of working time.
2052936
YES, if you use a fresh, quality batteries. If you aren't timing it, it will last even longer!
356854
Wel we don't run the lights all the time so I only know that I have only changed the batteries once so far. We run them when we have guests over. It appears that they last pretty long though.
470166
I leave mine plugged in all the time until needed, then plug it in again. Doesn't seem to effect battery life as I've been doing this for over a year and I still get up to 6 hours of light.
2088318
I would buy a crap ton of batteries as they drain out if you leave the little on/off switch in the on position. Just remember to turn it off after each use and it should last as long as anything else.
2154518
Should work fine!, its a 12 amp hour battery, so if the light is 1 amp (i doubt it for a LED) then theoretically you would have 12 hr.
360763
I have used it only for a few hours and so far have had no battery issues. The LED bulbs draw very little current and the batteries should last for quite some time.
434389
With proper use (i.e. charging during the day and operating during the night), the batteries should last longer than 2 years. Like any rechargeable battery, over time the charge may not last as long as with say a mobile phone, but the lights are on periodically so I have not noticed any degradation over the 2.5 years I have had 4 of my lights installed. Finally, the bulbs are actually 60 LEDs which are attached to a circuit board and cannot or do not need to be changed. The operating life of the LEDs are about 20,000 hours far exceeding the life of the light.
1142705
I have left mine on overnight many times. No problem. My lights have lasted 12 to 18 months of hard use. We do undercar work and use them all day long. We charge them when they get weak. This us usually once or twice a week.
476662
From what I can tell so far, when running continuous on high, the battery only last around an hour. But that probably isnt real accurate. My uses are on and off a lot. I dont usually run it for more than a few minutes at a time. I do know that this light does get hot to the touch when its been on for an extended period of time.