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Batteries installed in devices, as per the TSA and the UN shipping regulations and pretty much everything else, are always OK to ship or travel with until they hit some magic size limit, which is way more than most folks will ever need to worry about. You can always email your carrier to check...

What he said. BUT. A small amount of ozone might actually be a good thing, it will kill any mildew or fungus spores before they can become an issue in your gear. Something to lie awake at night wondering about.(G) Using USB fans and a battery bank is a GREAT idea. (D'oh!) I find that the liners...

spoolin- One of the many nice things about 3M is that you can find their product support number, toll-free, on the back of every product. And they get answers. Give 'em a call, they'll be able to tell you the authorized resellers for the product in your area. Worldwide. And, their tech...

Mike Nelson only took magnesium flares with him because back then, fire had already been invented but not underwater flashlights.(G) Much, perhaps most of today's wreck diving is what I call "curated wreck diving". You are going with a curator (guide) just like someone would give you a tour at...

Good point on the material. Just because you can jam something in..."Tab A into Slot B" doesn't always hold up so well. I'd bet there's a Fastex catalogue that says things like "Model #35239, fits belt materials from 1.5mm to 3mm. thick." Frightening thought: Do you think "everyone" wants...

Bob, I agree with you on Fastex requiring more finger dexterity and the way that could be an issue. On adjusting it though? Nope. I have a big heavy backpack with a gen-you-whine Fastex waist buckle, and I can hump that up on my shoulders and pull the waist buckle tighter in one easy shot. There...

Those "side pinch" buckles are called "Fastex" buckles, after the company that invented them IIRC. Genuine Fastex brand buckles are pretty strong. A lot of cheap copies are just cheap copies that break. I wouldn't have much hesitation about using one on a weight belt, but the simple flip-lever...

"Have you ever used WhatsApp? If the caller and the receiver both have the free app on their cell phone, then calls and texts are free anywhere in the world" Not quite true. A lot of folks have been burned with surprise cellular roaming DATA charges. WhatsApp requires a data connection, there's...

bubbles- If you got your "shingles shot" ? You need to get a second one after two months. If what they gave you just requires one shot--it is the old less effective Zostervax vaccine. Even the pharmacists have been confused over this. The first dose of the Shingrix vaccine for some reason is...

Dog, I didn't say it was unreasonable, exceptional, or not worth the reaction. I think my comment was pretty objectively limited to just saying THIS YEARS SHOT IS GIVING PEOPLE MORE REACTIONS. For that matter, the new Shingrix vaccine against shingles (which needs two doses, not just one) is...

Joe- "Therefore the chance to significantly over-discharge a battery to the point of gas release is extremely unlikely." As a practical matter, gas release only happens when a battery is OVER charged. Discharging it will not trigger a gas release. So unless a device is built to allow the...

Bubbles, I didn't say anyone gave them a red hot anything. I said, quite clearly I thought, that their ARMS developed a red blotch, accompanied by a feeling of heat, at the injection site. Yes, DUH, the pharmacy they have used for many other things does know how to use alcohol wipes and how to...

Two neighbors got this year's flu shot two weeks ago. Both said the same thing: They've never had such a reaction before. Most years, no reaction at all. this year? Four days of hot red blotch at injection site and sore arm. So...be warned.

giffenk, I know the TSA is purely domestic. But in actual point *their* standards and regulations are often applied (and perhaps mandated) for incoming flights into the US. Aeromexico had a post about that, saying that various standards applied but that passengers inbound to the US would be...

Installed in baggage: Yes, that could have been more elegantly written but that would mean more words, smaller type, bigger sheets of paper...So you'd have to pay an additional printing fee. (sigh.) Somehow you missed the kerfuffle this year. A number of baggage makers were putting a handy USB...

The August 2018 gospel according to the TSA.GOV web site: " Batteries Allowed in Carry-on Bags: Dry cell alkaline batteries; typical AA, AAA, C, D, 9-volt, button sized cells, etc. Dry cell rechargeable batteries such as Nickel Metal Hydride (NiMH) and Nickel Cadmium (NiCad). Jump starters...

Those "coin cells" technically are classed as "lithium metal" batteries, as opposed to the rechargeable kind. The two different kinds are regulated differently, and the regs have changed several times, so I'd suggest you check with the carrier and the "Mexican TSA" specifically for lithium metal...

The quality of the silicone, plus UV and chemical exposure and oxidation, all will cause that. All you can do is keep the mask clean (no sunblock, etc. on it) preferably stored in an air-tight opaque case, and I'd suggest talcing it before you store it. Dusting "rubber" and plastic parts with...

Richard- "In a nutshell, one of my bucket list goals is to someday dive the Oriskany wreck," And I'm sure it is a unique wreck. But send me a PM and I'll send you the secret handshake, which allows you to simply make a donation and then spend an entire day walking around the USS Intrepid. Or...

In the 60's every Boy Scout knew about tourniquets. Then somewhere along the way, civilian first aid said never ever ever even think about them, they cause loss of limbs. And that went on until fairly recently, maybe five or ten years ago. Then someone figured out that, gee, we've got these mass...