Sofirn has
Sofirn H25LR (D25LR) White / 660nm Deep Red LED Rechargeable Headlamp w/ 18650 Battery on sale for
$15.99.
Shipping is free on $29+ orders.
Thanks to Community Member
jeffholiday for finding this deal.
Features:- The D25LR headlamp utilizes dual LED Emitters. One of which is the LH351D 5000K CRI 90 High for a nice comfortable white beam. The other LED Emitter is the SST20-DR Red LED, which produces red light in the wavelength of 660nms which helps to protect your night vision.
- The D25LR is powered by a 18650 battery with a 50,000 hours lifespan. It also has a built-in USB C charging port, which permits fast and convenient charging saving you the trouble of removing the battery.
- One Hand Operation: One switch controls Two LEDs.
- The D25LR Headlamp is constructed from aircraft grade aluminum, with a hard-anodized anti-abrasive finish. The rechargeable headlamp is built to endure rough handling.
- IPX6 waterproof rating.
- LED headlamp emits a deep red light that may help improve declining eyesight.
- Weighting 80g (without the battery) makes it comfortable to wear for hours at a time. It has an easily adjustable headband for a custom fit for hands-free illumination.
- 4 Brightness Levels (White Light LED Emitter): Moon-Low-Medium-High. At full brightness, it produces a max output of 500 lm for long distance searching. On a lower setting, it is perfect for close-up illumination.
- When charging, the battery indicator light glows red. After reaching Full Charge, the indicator light glows green.
- Mode Memory
Top Comments
92 Comments
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White light constricts your pupils so when you turn the lamp off, you won't be able to see in the dark until your pupils dilate to pick up whatever visible light is available from nature.
Red light doesn't have the same effect so you retain your night vision when you turn your head lamp off.
https://www.amazon.com/dp/B0CWPBH...p13NP
Pros - Both white & red lights are bright and are dimmable. I don't think I would ever need a brighter headlamp. I've had no problems with battery life. You can easily angle the light up or down.
Cons- It is pretty bulky, but not uncomfortable to wear. I wouldn't use this for night running, for instance. It is rechargeable - which is a mixed blessing. If you run out of battery at the wrong time - you are out of luck. I usually pack a back-up AA powered headlamp while night hiking for safety.
Pros - Both white & red lights are bright and are dimmable. I don't think I would ever need a brighter headlamp. I've had no problems with battery life. You can easily angle the light up or down.
Cons- It is pretty bulky, but not uncomfortable to wear. I wouldn't use this for night running, for instance. It is rechargeable - which is a mixed blessing. If you run out of battery at the wrong time - you are out of luck. I usually pack a back-up AA powered headlamp while night hiking for safety.
White light constricts your pupils so when you turn the lamp off, you won't be able to see in the dark until your pupils dilate to pick up whatever visible light is available from nature.
Red light doesn't have the same effect so you retain your night vision when you turn your head lamp off.
https://www.amazon.com/dp/B0CWPBH...p13NP
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https://www.amazon.com/dp/B0BF5XZMS9
The energizer seems to come with a protected cell, there's an extra ribbon cable connection from top to bottom for the end cap protection circuit to prevent over discharge.
https://www.nkon.nl/fr/blog/prote...edbatte
https://a.co/d/9860POy
Favorite headlamp to date:
https://a.co/d/3hpfxVN
This one is heavier with the 21700 battery but lasts a long time. I picked up 2 spare batteries for $10 each and can use non-stop for over 10 hours at the 2nd highest setting
The 18650 battery in the Sofrin is twice the capacity of the 14500 in the Thurnite.
The Sofrin HS41 with the 21700 battery you linked to is heavier and not much brighter than the H25 once it thermals out of turbo mode. https://zeroair.org/2023/08/17/so...mp-review/
Lights that can actually put out megalumins of light for more than a minute or two need thermal management & multiple emitters and the bigger battery systems.
My "5000" lumin bike light cuts power to about 1200 lumins after 5 min.
The Sofrin H25 has a really bright red light that I am going to love for fatbiking this winter. Only negative is the micro USB charge port but I charge my 18650's on a external unit.
White light constricts your pupils so when you turn the lamp off, you won't be able to see in the dark until your pupils dilate to pick up whatever visible light is available from nature.
Red light doesn't have the same effect so you retain your night vision when you turn your head lamp off.
Put it in another way- you won't realize that the red lasers burnt a hole on your retina until it's too late, whereas green lasers seems so bright (for the same power output), so you look away, plus the human reflex closes pupils.
Edit: ... and I meant to agree on the safety advantage of red-light - not having to experience the temporary loss of sight from the human delay in re-dialating pupils (when white headlight turned off).
The shift to polymer really kicked in when Sony managed to make un-safe cells in 2006. As more folks abandoned luggables and bought lighter "notebooks", polymers are moldable to use all voids to gain power/density in the pricey tiers.
I hear the new pouches (for solar storage) have even safer chemistry and discharge 180A (15C), but those stuck in the (near) past that delt with bulging-pack fire hazards ... just need to keep an eye (and two redundant sensors) on these new-fangled foil bags.
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