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Thread: Thank god for back up lights!

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    Thank god for back up lights!

    Yesterday I was pushing myself through a narrow passage in around 55m. Suddenly my main light went black. My buddy was just behind me and at first thought that I was stuck. No I was getting my back-up lamp at hand.

    It was a nice reminder why you must have two back-up lights that are just tested to function before the dive :D

    JH

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    Re: Thank god for back up lights!

    Quote Originally Posted by jhaaja  View Original Post
    It was a nice reminder why you must have two back-up lights that are just tested to function before the dive :D
    I used to think, it's only a backup, no need to worry about the batteries...

    Until I had a triple light failure...

    With my stage bottles not attached to the line, just dropped on the floor...

    Solo...

    Oops... :D

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    Re: Thank god for back up lights!

    Quote Originally Posted by lizardland  View Original Post
    I used to think, it's only a backup, no need to worry about the batteries...

    Until I had a triple light failure...

    With my stage bottles not attached to the line, just dropped on the floor...

    Solo...

    Oops... :D
    Did you lear something

    JH

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    Re: Thank god for back up lights!

    I was in the middle of a loooong hang inside a cave when suddenly I sh1t myself as I started experiencing visual disturbances. Everything was going dark then bright then dark then bright again - the whole cave. I just started to think I was about to fit when it went totally dark as my HID battery died. I didnt know at that time that at the end of its 4hr burn time the HID light flashes before it dies :D

    Although I had planned for it with additional lights and knew it would run out during the deco it still surprised me. :D

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    Re: Thank god for back up lights!

    Quote Originally Posted by Drmike  View Original Post
    I was in the middle of a loooong hang inside a cave when suddenly I sh1t myself as I started experiencing visual disturbances. Everything was going dark then bright then dark then bright again - the whole cave. I just started to think I was about to fit when it went totally dark as my HID battery died. I didnt know at that time that at the end of its 4hr burn time the HID light flashes before it dies :D

    Although I had planned for it with additional lights and knew it would run out during the deco it still surprised me. :D
    Mike,

    do all Hid lights flash before going dead? is it a battery thing? or was it your unit only?

    Thanks.

    Spyros

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    Re: Thank god for back up lights!

    Quote Originally Posted by Outlaw  View Original Post
    Mike,

    do all Hid lights flash before going dead? is it a battery thing? or was it your unit only?

    Thanks.

    Spyros
    Spyros,

    If your light was manufactured with Welch-Allen components, at least on the 18W HID lights, when the voltage drops too low the ballast will buzz for about 20-30 seconds before shutting off.

    With Brightstar components, you will get the stobe effect quite often when the battrey voltage drops too low before shutting off completely.

  7. #7

    Re: Thank god for back up lights!

    I've deco'd in the dark - no lights - just raising my arm until the alarm on my computer stopped complaining. Fortunately I had left a light at base otherwise I'd have been crawling out of the dry section of the cave in darkness too.

    One learns...

  8. #8
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    Re: Thank god for back up lights!

    Quote Originally Posted by Drmike  View Original Post
    I was in the middle of a loooong hang inside a cave when suddenly I sh1t myself as I started experiencing visual disturbances. Everything was going dark then bright then dark then bright again - the whole cave. I just started to think I was about to fit when it went totally dark as my HID battery died. I didnt know at that time that at the end of its 4hr burn time the HID light flashes before it dies :D

    Although I had planned for it with additional lights and knew it would run out during the deco it still surprised me. :D
    Funnily enough, I had a similar event the first time I took my homebuild into Hurtle Pot. My vision was going dim and everything was going a funny colour... low voltage on a halogen lamp... funny how clear the word "cock" sounds when muttered through a DSV.

    I also shat myself once when I thought the cave roof had collapsed on me. Instead, some knob had been piling a load of rocks on top of my RB until I moved and they ended up on my head.

    Quote Originally Posted by Duncan Price  View Original Post
    I've deco'd in the dark - no lights - just raising my arm until the alarm on my computer stopped complaining. Fortunately I had left a light at base otherwise I'd have been crawling out of the dry section of the cave in darkness too.

    One learns...
    Nice one!

    I was diving with someone a few years ago (another member of the RBW parish) who spent an interesting 20min negotiating a bit of a choke with no line going through it in the dark just by the light of his VR3.

    Once again, on the way in we'd both thought it's only a gap of a few metres, why worry.

    As you say, one learns...

    Cheers,

    Stuart

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