I could use some advice on the best type of flashlight to buy to be stored in my car trunk and used as a "breakdown" flashlight. In the old days, you didn't have many choices, so you likely ended up with a cheap plastic flashlight from K-Mart with alkaline "D" batteries. Yesterday I saw a really slick looking mini flashlight that claims to have 700 lumens yet is the size of a small pickle! However, as I was buying it tonight, I saw that it uses lithium batteries. (Not sure if they are lithium or lithium-ion.) Either way, after frequently hearing about people's iPhones and MacBook catching on fire, it got me to thinking that maybe buying a "breakdown" flashlight that uses lithium-based batteries isn't such a good idea?! To further complicate matters, in another thread of mine, I was advised *not* to leave an iPhone in my car glovebox year-round because it will kill the battery for good due to the extreme temperature changes. (I wanted to buy an extra iPhone and leave it in my car so I always have a decent, yet small, camera with me.) So back to my "breakdown" flashlight... What is the best way to go? Seems to me that those old-fashioned $5 alkaline battery flashlights from K-Mart usually lasted for a couple years in our cars before we had to replace the batteries, but then maybe that is my senility kicking in?!