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Looking for two flashlights

Discussion in 'Advanced Scuba Discussions' started by Bigeclipse, Aug 5, 2019.

  1. The Chairman

    The Chairman Chairman of the Board

    # of Dives: I just don't log dives
    Location: Cave Country!
    55,898
    23,267
    113
    Easy enough to convert a 26650 to accept an 18650. 1 3/4" piece of 3/4" PVC pipe slid over the battery makes it fit just fine.
     
  2. tbone1004

    tbone1004 ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: I'm a Fish!
    Location: Greenville, South Carolina, United States
    15,733
    7,067
    113
    @The Chairman true, but the lights are physically quite a bit larger and that's the bit that I don't like
     
  3. carobinsoniv

    carobinsoniv Manta Ray

    # of Dives: 500 - 999
    Location: Moultrie, Georgia
    702
    134
    43
    I have gotten good use from the Dive Rite BX1(replaced by the BX2) and the Light Monkey 2w and 3w lights. The Dive Rite CX1 may have a little more light output but I have never used one. These lights probably fall in the 90 to 165 range. FWIW, I have gotten better use out of twist switches over push button switches.
     
  4. dberry

    dberry Hydrophilic ScubaBoard Supporter

    # of Dives: 100 - 199
    Location: Philadelphia
    988
    512
    93
    I don't find the 26650 form factor to be a problem, but I agree you'd want to replace the battery and charger that are commonly bundled with lights like this.

    BTW, the volume of a 26650 is almost exactly twice that of a 18650, so shouldn't it give a much longer burn time (assuming the LEDs are the same)?
     
  5. PfcAJ

    PfcAJ Orca

    # of Dives: 5,000 - ∞
    Location: St Petersburg, Fl
    7,505
    6,069
    113
    I just spent a week diving with Big Blue lights in Grand Cayman , and I’m actually impressed.

    I wouldn’t hesitate at all to recommend them.
     
    chillyinCanada likes this.
  6. aviator8

    aviator8 Photographer

    # of Dives: 25 - 49
    Location: Georgia
    642
    336
    63
    Yes the 26650 shouuld run longer. The Mah rating is the "amount of gas" a battery has. a good 18650 is 3400Mah. A good 26650 is 5200Mah.
     
  7. tbone1004

    tbone1004 ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: I'm a Fish!
    Location: Greenville, South Carolina, United States
    15,733
    7,067
    113
    @dberry yes, the 26650's are usually around 5ah where the 18650's are usually around 3ah give or take so you'll get 1.5x the burn time. The good 3400mah 18650's are good for an hour or so which is about as long as most people are diving on a single dive anyway so the smaller form factor is nicer to me. To each his own though and there's nothing wrong with them, just personal preference on that one for me
     
  8. The Chairman

    The Chairman Chairman of the Board

    # of Dives: I just don't log dives
    Location: Cave Country!
    55,898
    23,267
    113
    I almost always buy the 18650 lights... but I do have a couple of the others, so knowing how to use them without having to buy the bigger batteries is important to me.
     
    tbone1004 likes this.
  9. Sh0rtBus

    Sh0rtBus BUBBLLLLLLES! My Bubbles ScubaBoard Supporter

    # of Dives: 100 - 199
    Location: Denton, TX
    709
    432
    63
    Chalk up another vote for the DGX 600. It's been my primary since I did my AOW class a few years back and I've never had any complaints. Long battery life, plenty of light output, nice focused beam, and small enough to stow just about anywhere. Yeah it's a twist on/off, but that's not an issue (for me at least) unless you're using it with a glove. Then you just have to turn it on before you secure it to the glove. Easy enough to cover the lens if you need it to be off for any reason during your dive.

    The small bright white circle in the center of this pic is the DGX 600. Taken in the Pit in Tulum sometime around noon that day.

    Also seen here as the bright beam in the midst of the halocline @ around 60 FFW
     
    racanichou likes this.
  10. Diesel_Diver

    Diesel_Diver Nassau Grouper

    # of Dives: 100 - 199
    Location: Bay of Fundy region
    139
    45
    28
    Big Blue has a combo kit that you can buy, one 1200 lm and a 450 lm choice of wide beam or narrow beam . The 1200 takes an 18650 battery the 450 takes 3AAA.
     

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