Any gadget like a mobile, tablet or a laptop that has a high power battery that needs to be charged has a chance of exploding. But, in real life, thankfully such instances are far and few.
The common reasons put forth are
2.Hot, humid,stuffy environment
3.a short circuit in a laptop that has been dropped or where the contact points are loose.
4.a bad or a faulty lithium-ion battery
5.'thermal runaway'- every working laptop has this process, wherein literally heat being given out when the batteries produce more heat than the system can handle during the recharging process.
6. Some of the old laptop batteries have a higher chance( like the versions of 2006 wherein Sony, Dell and Apple have recalled lithium-ion batteries of that period after such instances).
So, it is prudent that we follow safety while we enjoy the benefits of the laptop.
1.Use a reputed standard model, rather than a assembled cheaper version
3.Replace with recommended company made original battery at authorised centers
4.Use judiciously, for instance, if you into gaming and high video use, then the laptop get hot soon, so use the laptops that are classified as gaming laptops.
5. Use bottom cooler fan base, that is available widely.
6.Avoid connecting the laptop for overnight charging
7. Place in on the desk or the floor, rather than leaving it on and charging on the bed next to you.