Cave Light

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I'm with Lynn - 21W HID Salvo. And this is the best light I ever seen.
Mania
 
WARNING WARING WARING OMS Lithium-ion could put your life at risk.

After my 10w Phantom HID hight seemed to have an issue with holding a charge I did some research in Lithium-ion bats. See http.//en.wikipedia.org/wiki/lithium_ion_battery.
The battery at full charge will irreversibly loose approx 20% capacity per year...and much more if not stored in 40% to 60% of charged and in your refrigerator! My light is 3 years old and based on the info I could find lost 60% of capacity. Did it come on, nice and bright, yes. But did NOT come back on in just 40 minutes of use. (Specs say 270 minutes) I have and read the OMS owner's manual and maintained the light.
Called to order new battery. OMS price over $200.00 I requested the date of manufacture and got run around, requested information on the stated 13.2v capacity stated in OMS Specs because the charger only charges up to 12.5v, got run around. Called dive shop to order light IF they could get the manufactured date. They were told that someone would call back, OMS sent it any way. It came in, IT was 2 years old. So they want to sell a battery which the capacity could be 40% to 80% less depending on how OMS stored the battery as new. PROBLEM, you plan your dive accounting for half of the stated Burn time of 270 minutes, your light is 3 years old and 60 minutes into your dive your $1,000 lights fails. Or you buy a "NEW" battery from OMS not knowing they are selling old batteries. Your back up floods and your 3rd, well you just did not bring it. Have a nice dive.
I could not get info from OMS and OMS told the dive shop was told I was wrong. OMS denied any issues with the Lithium-ion batteries with capacity because of age.
Now what can I do with a $1,000 light when OMS will only sell old batteries which can fail deep inside a 200 foot 60 year old mangled wreck?
The thing is OMS just did not care and SEEMS to want to put profit above safety
Please send this information about Lithium-ion batteries to as many people you can. It could save a life.
 
WARNING WARING WARING OMS Lithium-ion could put your life at risk.

PROBLEM, you plan your dive accounting for half of the stated Burn time of 270 minutes, your light is 3 years old and 60 minutes into your dive your $1,000 lights fails. Or you buy a "NEW" battery from OMS not knowing they are selling old batteries. Your back up floods and your 3rd, well you just did not bring it. Have a nice dive.

Hmm, well, just not bringing my 3rd, just doesn't happen. Plus my buddy has 3 lights, so we should still be ok, and if all 3 of his fails, well that's why I was trained to do lights out exits, no viz lost line drills, etc etc. and why i practice those things.

Sure it sucks if your battery dies, but I'm not sure it is a catastrophic as you make it sound. A little dramatic IMHO.
 
If you're doing a dive where you light is critical in any capacity, you need to be burn testing it regularly (every 6-12 months, at a minimum).

Stated burntimes are often innaccurate to some degree, and knowing for sure is a better option than trusting a number from a manual. There will always be issues with batteries (age, storage condition, factory defects, cell damage, etc), and you NEED to know your light's burntime.
 
Er , thats why the Good Lord gave us 3 lights !!!!
Pre-tested , you know.

Now as for the craving for 21W lights???!!!!! :confused:
Hey , some of us non-professionals STILL dive with 10w'ers.

OH well , I guess I'll never reach that professional level. (sigh)

Da (hanging-head) Beano
 
I have been diving the GreenForce LED (Tristar Plus) for a couple years now and love it. In the water it is indistinguishable from a 10W HID. There have been no problems whatsoever with my light or the ones owned by a few of my dive buddies.


Uhhh... not sure what 10w you're comparing it to, but I've found the opposite to be true. Not saying the GF is bad, I dove one for nearly a year, but the difference between that light with the LED or the 10w HID head is light and day with Halcyon/Salvo/Sartek 10w HID. Not in the same league.

A big advantage of the GreenForce, though, is that it is modular. You can detach the LED light head and attach an HID if you wish, or attach the new and improved LED that will undoubtedly come out in the future, without having to scrap the entire light.

It also has some drawbacks. Like the proprietary charger, the inability to replace the battery, and the very awkward goodman handle.
 
Based on a few emails I've gotten it is clear I was not clear.
I am not a cave diver, though I've studied the material and thought it may be of
importance to let you know of inherent issues with Lithium-Ion Batteries.
My narrative was not the best for the cave diving group.
It was written more for the wreck diving community. Some of us dive solo.
Be that as it may, I could have written it better, however I think a lot of you missed the point.
The point I was trying to make was that regardless of the watts/lums Lithium-Ion batteries are not to be relied on after 2 years. That the Info in OMS's owner's manual does not touch on how to best maintain the battery and OMS will sell you a two year old battery as new. And that the battery MAY have lost up to 80% of capacity and therefor reliability. I had one person email and say "but Jim $200. is nothing for a new battery in the grand scheme of things". Based on the "grand scheme of things" I asked for $200 for my next trip. What do you think the ans was! Did this cave diver miss the point! $200.++ does not even buy you a new battery!
I'm trying to think of the best way to word this. I'm not the best by a long shot. And equipment does fail and we must prepare and practice for it. However when it does happen; even to the best, it will be stressful at best. We all do and must have an expectation that our equipment will be reliable if maintained. So I think it is a little cavalier to say even though I know my Lith-ion light has issues, I'm trained so well and so experienced that I'm ok with it, I'll just deal with it.
Dump the Lith-ion batteries lights. Dive lights are not a good application for this battery. Again, ck out the web-sit for more info.
I hope this helps.
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https://www.shearwater.com/products/peregrine/
http://cavediveflorida.com/Rum_House.htm

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