Is the bursting into flames something that only occurs while recharging?
No, if it gets shorted out it can overheat and burn then too.
So it might be the circuitry of the toy car that caused it and not strictly the battery?
Cheap Chinee chit.
There are both devices and batteries that are unsafe.
If it's genuinely CE marked, it's probably okay... at least for awhile, if the CE cert is not forged, that is.
Strangely, the U.S. doesn't require goods to be tested or marked.
