A recent spate of laptop computer fires prompting battery recalls has spread to the US auto aftermarket as the US Consumer Product Safety Commission and Clarion announced a voluntary recall of batteries used in an entertainment/navigation unit.

The lithium-ion batteries in about 2,500 Clarion N.I.C.E. P200 navigation and entertainment systems sold in the US can melt or overheat posing burn and fire hazards to consumers. The batteries were made by Kiryung Electronics of Seoul, South Korea.

Clarion has received four reports of the unit melting   or overheating but no injuries have been reported.

Only N.I.C.E. P200 units with serial numbers ending in 'UE' or 'UF' are affected by the recall.

They were sold through car audio and mobile electronics stores from May 2006 to this month for about $US900.

Consumers have been advised to stop using the recalled batteries immediately and contact Clarion to receive a free replacement battery and a  postage-paid envelope to return the recalled battery.