Corrects to clarify bookbuilding will begin the week of May 12, not as early as next week, in headline and first and second paragraphs

HONG KONG/SYDNEY, April 30 (Reuters) - Chinese battery giant CATL 300750.HK plans to launch its Hong Kong listing during the week of May 12, according to two sources with direct knowledge of the matter, in what is set to be the city's largest share sale in four years.

The bookbuilding for the deal, or the process to invite bids for the equity offering from investors, is expected to begin the week of May 12, said the sources, who declined to be named discussing information that is not yet public.

Reuters has reported, citing people with knowledge of the matter, that the offering could raise at least $5 billion.

CATL did not immediately respond to a request for comment.

(Reporting by Selena Li in Hong Kong and Scott Murdoch in Sydney; Editing by Sumeet Chatterjee and Jacqueline Wong)

((sumeet.chatterjee@thomsonreuters.com; +852 3462 7757;))