" Dell Inc., the world's largest personal computer maker, said Friday that it is increasing the recall of Sony Corp (NYSE:SNE - news). battery packs used in its systems to 4.2 million units from 4.1 million units.
The batteries can short-circuit and have been blamed for causing some computers in which they are used to overheat.
Separately, Toshiba Corp. said Friday that it is recalling 830,000 batteries made by Sony for its laptops at Sony's request. It was the latest in a growing global recall involving Sony batteries, bringing the tally of recalled batteries to about 7 million worldwide."