One of Samsung's factories has caught fire after the "exploding" batteries that forced it to recall the Galaxy Note 7 smartphone combusted.

The fire in the Samsung SDI factory, which developed some of the faulty batteries in the Note 7, was caused by a pile of discarded batteries in its waste facility, the local emergency services said.

It took 110 firefighters and 19 trucks to put out the blaze at the Samsung SDI factory in China.

"The material that caught fire was lithium batteries inside the production workshops and some half-finished products," said the local fire department in Tianjin.