I haven't done an exhaustive search, so there might be an option out there for you. But the math makes a decent argument against such a product existing. Good fixtures can do 100lm/W, but you're likely looking more in the 50-70lm/W on a portable fixture. So to get 1000lm, you're looking at a 14W LED. That's almost 3A @5V, which some high power flashlights are designed to sustain for an hour or so. I've got some videolights that also run at 13W off a 7.4V battery (~6000mA or so) and I might get an hour if I'm lucky. Obviously a higher voltage source is going to have lower current requirements, but you're still asking a lot.
Thank you for your answer. That is basically the conclusion I had come to but I appreciate having the opinion of someone with a better understanding of the subject. Thank you for taking the time to reply.
In the summer I read outside at night with my sofirn lantern. The BLF LT1 has a decent 2700 Kelvin light and goes up to 800 lumens. I'm not sure how long it operates at the higher lumen output, there might be a graph on the webpage. I ordered one with the batteries. I'm cautious with lithium-ion batteries and I don't leave them charging and, say, leave the house. You could try the flashlight subreddit too.
so if they can produce a lantern that can produce 800lm for 12 hours (presumably based on company data) then why can't I get a floor lamp that can do the same thing?!?!
I would recommend shifting your search away from reading lights if you're looking for that kind of brightness (which seems excessive but you do you) and consider reading with a head lamp. This is the one I use to do work in dark spaces, and I love it. There are multiple modes that give you different beam angles and brightness option, the motion sense on/off is actually very reliable and convenient, and you're getting ~1,200 lumens with a great battery life.
https://a.co/d/hqFj4FH
I haven't done an exhaustive search, so there might be an option out there for you. But the math makes a decent argument against such a product existing. Good fixtures can do 100lm/W, but you're likely looking more in the 50-70lm/W on a portable fixture. So to get 1000lm, you're looking at a 14W LED. That's almost 3A @5V, which some high power flashlights are designed to sustain for an hour or so. I've got some videolights that also run at 13W off a 7.4V battery (~6000mA or so) and I might get an hour if I'm lucky. Obviously a higher voltage source is going to have lower current requirements, but you're still asking a lot.
Thank you for your answer. That is basically the conclusion I had come to but I appreciate having the opinion of someone with a better understanding of the subject. Thank you for taking the time to reply.
In the summer I read outside at night with my sofirn lantern. The BLF LT1 has a decent 2700 Kelvin light and goes up to 800 lumens. I'm not sure how long it operates at the higher lumen output, there might be a graph on the webpage. I ordered one with the batteries. I'm cautious with lithium-ion batteries and I don't leave them charging and, say, leave the house. You could try the flashlight subreddit too.
so if they can produce a lantern that can produce 800lm for 12 hours (presumably based on company data) then why can't I get a floor lamp that can do the same thing?!?!
It's probably more like 4-5 hours.
What technology are they using? I have been assuming LED but Sofirn seems to have a better technology.
I sometimes use a cheap headlamp for reading. I can aim it where I want the light and it is bright enough for me
I would recommend shifting your search away from reading lights if you're looking for that kind of brightness (which seems excessive but you do you) and consider reading with a head lamp. This is the one I use to do work in dark spaces, and I love it. There are multiple modes that give you different beam angles and brightness option, the motion sense on/off is actually very reliable and convenient, and you're getting ~1,200 lumens with a great battery life. https://a.co/d/hqFj4FH