Dive lights, carry on or checked bags?

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Scubadeep1

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Location
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Does anyone know the latest rules for Light and Motion dive lights from US flight to Coz. do they go in checked or carry on and then for return flight from Cozumel to US do they go in checked or carry on bags?
 

Put them in checked bags for both arrival and departure. One time when leaving Cozumel we forgot that a dive light was in our carry on bag. After going through security they required us to go back to ticket counter and put the dive light in our checked bags, even if batteries were separated and discarded.
 
Ask the airline about lithium-ion batteries in checked luggage. Kind of a common no-no.
 
Ask the airline about lithium-ion batteries in checked luggage. Kind of a common no-no.
The problem is spare lithiums, not those in the lights.
 
I have no idea about the mexican rules...

US rule is to carry spare lithiums in your carryon. Mexican rule is to put ALL spares in your checked luggage.
So entering Mexico, follow the US rule: put your spare lithiums (small ones, not huge honkers...forget those) in your carryon.
Leaving Mexico, put the ALL spares -- not just lithium -- in your checked luggage. Then, when you get to Houston or Dallas or wherever you are changing planes, move the lithium spares from your checked to your carryon.
Crazy.
 
We just flew out of CUN with our batteries, packed in separate baggies, in our carryon without an issue. That being said, when we fly out of CZM, no batteries in carryons.
 
The last time I took my diving light, when leaving Cozumel I had to discard my alkaline batteries. They permitted the light in my carry-on, but no batteries. I'd second the suggestion from tursiops, especially with lithium batteries. The did however, allow me to carry on my spare go-pro batteries.
 
US rule is to carry spare lithiums in your carryon. Mexican rule is to put ALL spares in your checked luggage.
So entering Mexico, follow the US rule: put your spare lithiums (small ones, not huge honkers...forget those) in your carryon.
Leaving Mexico, put the ALL spares -- not just lithium -- in your checked luggage. Then, when you get to Houston or Dallas or wherever you are changing planes, move the lithium spares from your checked to your carryon.
Crazy.

I know I see this opinion on Scubaboard, but when I flew out of Coz about a month ago I followed the standard TSA rules (spare batteries in carryon) and had no problem. I even asked at the Coz airport where I should put spare batteries and they told me, carryon. It's important for each battery to be properly stored and not loose in you suitcase so there is no possibility of short. I keep mine in special plastic battery boxes.

Also I put a piece of paper inside each light between the battery and light contact so the light cannot turn on by accident.
 
I know I see this opinion on Scubaboard, but when I flew out of Coz about a month ago I followed the standard TSA rules (spare batteries in carryon) and had no problem. I even asked at the Coz airport where I should put spare batteries and they told me, carryon. It's important for each battery to be properly stored and not loose in you suitcase so there is no possibility of short. I keep mine in special plastic battery boxes.

Also I put a piece of paper inside each light between the battery and light contact so the light cannot turn on by accident.

It is not an opinion. My wife had her NiMH batteries confiscated by security when she tried to leave CZM a couple of years ago. They also wanted to keep the rather expensive containers they were in.....but we objected and they finally relented. It is entirely possible CZM has this reputation because the security guards there have a little side business going....but as a traveler it doesn't make any difference, does it? Either way your batteries disappear. See also some comments on the TSA page about traveling with batteries.

The fact that you had no problem is barely relevant. That just means it does not happen to everybody. You haven't been killed in an auto accident either; do you deny they exist? When there is evidence that some event does happen, then cases where it does not happen do not disprove the event. This is a common fallacy on the internet. One takes one's personal experience as being more compelling than they should.
 
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