I was pretty into R/C touring car racing during the dawn of Lipo batteries, and back then then if you were charging packs at the the track every track mandated they be in a fire proof bag.
When plug in hybrids became a thing, I looked into the fire protection implemented around the batteries and found that there were none. I said to my wife, “a lot of people are going to have their houses burned down charging these cars in their garages.” That was ten years ago.
I got out of RC cars before lipo batteries, my day was the yellow, red, finally black cells. All nicads.
I started flying electric with a itty bitty GWS Tiger Moth, very small very light, still brushed and nicad battery.....but SMALL. Back when I worked at the "worlds foremost outfitter" the inventory guns had lithium batteries, very small. They changed all the guns out and are going to toss them. Ahh can I have them.....why? I want the batteries out of them. Sure. I flew that tiger moth on price scanner/inventory scanner batteries, so much less weight I had to add weight to the plane, but the flight time would be LONG.
Fast forward and I got out of "gas" planes and went all electric. 5' wingspan electric with 12cell batteries.
RC flyers of these big electric airplanes are IMHO the people that are the hardest on batteries. I have taken them out of a plane and be too hot to touch.
Have a real cool F9F Panther. EDF "jet". Battery gave up in mid flight and started trailing a stream of black smoke, If I was not worried about starting a forest fire it would have been real cool. Bridges of Toko-Ri. Got it down, hatch open and it is in there smoking and starting to melt the foam. Burned the hell out of my fingers but got it out and saved the plane.
Had one like I said just sitting there go up. Had one go up charging.
"Back then" they told us dunk them in really salty water for like a week or something then they are safe to toss. Well I shoot at home so I just shot them. As a side note I do not own an air rifle that will punch all the way through a pack like a 2200 3s, and I have some good airguns. I always found a 22lr to be the best for that, so little recoil you can really watch the show. Use the two wires + and + tie a knot and route it through your chain hanging your steel. Easy. Just make sure when the solder melts and the battery falls not to have anything that can catch fire right there. There is also a good bit of really nasty smelling smoke, I am sure that is good for you to breathe.
Quit flying when the FAA decided there is no difference between a 40" foam P40 and a 777 that is flying over the pacific ocean. I still have all my gear....in hope that sane people will one day see the stupidity of all this.
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