A video from China of a commuter's portable phone charger exploding on a busy train.

In the video, which was captured in Shenzhen, Guangdong Province on July 26, the passenger suddenly throws his charger on the floor as a cloud of smoke rises from it.

The device then burst into flames and the entire carriage of commuters backs away.

After a few moments a passenger runs into the carriage with a fire extinguisher and puts out the small blaze.