Sure you remember this unfortunate American teenager who had burned his pants with its PSP's battery.
It seems that the mystery is solved on the causes of this incident.
Indeed, the boy recharged its console with a Pelican Power Brick Battery Charger.
After several investigations, the U. S. Consumer Product Safety Commission ordered the restitution of approximately 231000 models.
The unit does not resituate the good charge to the battery, causing after usage, a surge in the circuit.