SEOUL (Reuters) - Samsung SDI, a battery supplier for Samsung Electronics' Galaxy Note 7 phones, posted a worse-than-expected operating loss in the third quarter, weighed down by the termination of the fire-prone devices. The Samsung Electronics affiliate posted an operating loss of 110 billion won ($96.33 million) for the July-to-September period, compared with a loss of 48 billion won a year earlier and a consensus forecast of a loss of 55 billion won. Analysts said Samsung SDI supplied about 60 percent of the batteries for the Note 7, which Samsung scrapped earlier this month due to over-heating problems. The remaining 30 percent were provided by China's Amperex Technology Limited (ATL). (Reporting by Hyunjoo Jin; Editing by Stephen Coates)