2 x cars. Caravan and boat.
ALL carry 18650 cells in Torches 24/7
for yrs.
We in Tropics (almost) up here,
but do get up to 42c on a hot day.
Most between 24 and 35c Outside.
I think they pretty safe.
AS LONG as they in good condition.
Their safety criteria is fairly strict
as they are (as stated above)
used for car power.
This topic has been discussed a few times, with passionate arguments on both sides.
I’ve kept an S2+ with a good quality battery (30Q I think) in my car for years with no issues.
I think if it’s a $10 eBay special light with the finest 8000mAh GoingToCatchFire 18650 cell then you’re asking for trouble, but if you use good quality items then it’s incredibly unlikely.
Im almost sure they are not powered off and able to wake up and turn on their fans.
Russian car drivers are probably leaders in closing their front view with different gadgets. Started with police radar detectors, then gps navigation, dash cams, rear mirrors with internal screen etc. If all this staff continuously connected to the 12v, driver never knows that batteries are dead. Im most cases they dont last more than 2 years. But yes, dangerous situations are very rare.
Considering there was a recent rash of news (at least where I live) about smartphones blowing up when people left it up in the car under the sun, “not recommend” is quite an understatement. But if you need to, you could stow it away from the sunlight.
Link?
The video is in Thai, though. I will try to find the source written in English.
Here you go. Same news, written in English.
http://thairesidents.com/local/hot-weather-causes-phone-blow-car/
Ying had a bad day, but I think Ying left her phone on the dash board of the car not the console. It could have vented and flew (possible) up to the dashboard and then went boom.
A few of those Samsung Notes burned up a few years ago.
Wow. Quite the response I got from this question. I’ve got samsung 30 Q’s and a 26650 Shockli powering 3 lights in my jeep so there all high quality batteries. There’s good points on both sides so how about I add in buying those storage bags for lithium cells and just keep the whole flashlight in it.
@SeniorXJ, your cylindrical cells are safe.
The problem with leaving cells in a hot car is longevity and cycle life capacity retention. That’s about it.
Pouch cells on the other hand, if they produce any kind of gases except during production, they are done for.
Case closed? You sound confident in your opinion. I am not second guessing, just asking what you are basing this on for piece of mind.
I consistently leave lithium cells in my car, however:
- I do have garages and also covered parking
- all glass is with window tint
- but the interior is dark/grey/black
