The fault is not in the device but in the batterypack. It's known that quiet cheap LiPo and LiIo from China and Russia are likely to explode. Usually there are certain specifications those batterypacks have to fill. Those off-brand battery often reach much lower charging states than they should. It results in an overload if used with a common loading device. If you're notebook battery is off bad quality it will be charged to 130% while the OEM Battery would be charged to 100% in the same time.
There are two ways to prevent that. The best way is to always buy OEM Batterys or even the original Batterys. The other way would be the use of an intelligent charging device. It will measure the loading state of all cells before it's starts the charging and therefore, an overload is much more unlikely (still can occure though).
In regards of exploding power. Don't underestimate a battery!
This is an exploding Laptop from Japan.
Scientist are working on batterys with a special nano-structure. They're more powerfull, can be charged faster (reaching 80% capacity after <1 Minute loading time), pack more power and can't explode anymore (operation temprature ranges from -35°C to +75°C). Once they're in the market I don't think we have to care about counterfeit battery-bombs anymore.