Tianneng Power International (HKG:0819) expects a 62% to 66% year-over-year decline in attributable profit for the six months ended June 30.
Revenue is also expected to fall by around 5% to 8% from a year prior, according to a Friday Hong Kong bourse filing.
The battery manufacturer attributed the profit forecast to high levels of upstream raw material prices, intensified competition in downstream industries, and the slower-than-expected recovery in demand.
The lower expected revenue was due to the scaling down of the company's trading business.