HK Stock Market Move | TIANNENG POWER (00819) fell nearly 5% in the afternoon as its subsidiary, Tianneng Battery Group Co., Ltd., is expected to report a more than 65% decline in net profit attributable to shareholders for the first half of the year.

TIANNENG POWER (00819) fell nearly 5% in the afternoon, and as of the time of writing, it was down 4.79%, trading at HKD 4.47, with a transaction volume of HKD 48.1846 million. In news, TIANNENG POWER announced that its subsidiary Tianneng Battery Group Co., Ltd. achieved an operating income of RMB 22.325 billion in the first half of the year, a year-on-year increase of 6.73%; the net profit attributable to shareholders of the listed company was RMB 281 million, a year-on-year decrease of 67.62%; the net profit attributable to shareholders of the listed company after deducting non-recurring gains and losses was RMB 150 million, a year-on-year decrease of 74.52%. Tianneng Battery Group Co., Ltd. previously issued a profit warning announcement indicating that the companys profit margins were squeezed by multiple interwoven factors during the reporting period. Specifically, the prices of core raw materials such as sulfuric acid significantly increased in the first half of 2026, which directly compressed the profit margins of lead-acid batteries. Coupled with the phased impact of the transition period for the new national standard for electric bicycles and intensified market competition, the company's profitability has come under pressure.