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18650 flashlight cree

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18650 flashlight cree Customers Reviews

  • little sun

    posted by mcmisak

    I like to work in versions with two batteries. Lights up very strongly - as a small sun.
    quite heavy in hands after longer time. I recommend using the battery type 26650. The batteries Ultrafire BRC 18650 3600mAh is at full power about 45 minutes.
    +++ very useful battery. I call it small sun. Excellent helper in an automobile workshop forest garden etc.
  • flashlight for every situation

    posted by lasermanathome

    nice, small and reliable divers-flashlight wich is also handy for common use.This diverslight has 2 brightness modes and one strobe, wich is for signing that you are in trouble very handy.The low mode is less than half (about 20% estimated) and gives a still usable amount of light for a long period of time, at full power the 2200mAH 18650 battery lasts for less than one hour but that amount of light is often not needed
    For all what you get (charger, divinglight , battery and velcron tape)this is a real bargain.It is possible that a PMMA does not allow cooling enough to operate the cree t6(0) at full power, this light uses the reflector ithselve as extended cooling, what makes that the t6 will not become overheated.Some tests I did with t6 on a star (batwing) and only cooling from behind and a reflector wich recoils the energy partly on the t6 did demolish the t6 very fast, so it is from utmost importance to keep the (own created) heat from the cree away, this led can barely be cooled with a star and other cooling, backfired heat will kill the t6faster than you can say the alphabeth!!I was so stupid to make that mistake two times.
    NNice, small optimised led DIVERSflashlight.It will be difficult to find something better certainlyfor the costs of it.Because it is completely weatherproof you can use it anywhere.Take a second charged battery with you, at full power you have about 3/4 of an hour.
  • small, handy, adjustable light

    posted by gaz69

    Small and powerfull. adjustable light. If the beam is not focussed it will give a very even spread amount of light so it is very useful when making pictures in a dark environment. When focussed you get a square in the same shape as the led inside.
    I use the flashlight for photografy and then is it very usefull because of the even spread of light. The colour of the light is very white and not so blueish as most of the led-lamps.
    quality ok, useful light for everyday use. Its fits nicely in to jacket pocket.
  • Dimming diving flashlight

    posted by balkibalki

    Nice, affordable lamp for spear fishing. Bright. Seems it is good sealed.
    Order silicone grease for o-rings- you will need it later, and put some plastic stopper on strap.
    Good value-for-money ratio. You can use it as normal flashlight too.
  • Solid flashlight with heat problems

    posted by azev

    -Ergonomic handling for regular European hands (middle finger slightly touches my palm when grabbing firmly)-Modular extension for using 3 cells (18650 & 26650), you have the flexibility to use either 2, 3 or a combination of both as needed-Digitally regulated 25W power drain, 92% driver efficiency at 12,6V, so LEDs get ~23W -> 3,23A@8,4V -> 2A@12,6V-Driver works at high power from 7,8V (28,18W) to 13V (25,5W), not tested above 13V-XM-L T6's are driven very efficient @~3,3W brutto (max. rated 10W)-As bright as two H4-55W car headlights in 20yo reflectors-LEDs glued to the flashlight head with some kind of white silicone. It is 5,8mm strong in its back part, so the heat can dissipate really good.-Easy to maintain: Reflector is screwed to the head with two fine-thread Philips-head screws, circuit is held down by a spring and a brass swivel-Spacers dimensions allow you to use protected 18650's-Nice brass caps cover contact springs in the head and tail
    -Plain tailcap allows you a relatively steady tailstand (this thing can illuminate a whole room when pointed to the ceiling)-When using the lowest brightness, PWM is quite visible and disturbing when moving-When using the lower brightness modes, a slight buzzing is noticable (only if you listen carefully)----------Temperatures measured with the driver taken out of the head (it kept realtively cool, due to convection) at 11°C environment temperature. The Flashlight was turned on 12 minutes at full power; temperatures did no longer increase significantly after that time. Due to taken out driver I calculate the estaminated temperatures (increased heat from the inserted driver not included, so you might add another 20°C):-> measured Value + 11° + Head temperature = Expected temperatures of the installed driver @22°C room temperatureTemperature estimation for assembled torch:-Head 60°C -> 71°C-Driver ‘Q5’ (near the inductor) 65°C -> 136
    Its an honor for me to do the first review for this flashlight.With this SKU you recieve a flexible flashlight of good mechanical quality; LEDs are driven really efficient with ~3,3W each.On the other hand this item grills itself when running longer than 10 min. Those temperatures are way too high for DC/DC and schottky-diodes (125° core temp. is their specified max. operating temperature!), so you better keep an eye on the runtime (and head temperature!).5 - 8 min. runtime in the highest position should be okay.Finally, it gets heavy when using 3x 18650's, even more with 26650's, which could be an advantage, if you use it for security purposes (think of MagLite’s).

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