- Manufacturing and repairing batteries.

- Trading raw materials for production of battery and battery accessories.

- Other activities under the business license.

- September 2, 1960: Tia Sang Battery Joint Stock Company, formerly Tam Bac Battery Factory;

- May 26, 1993: Company was renamed as Hai Phong Tia Sang Battery Company;

- June 22, 2004: Company was equitized and renamed as Tia Sang Battery Joint Stock Company with initial charter capital of VND10.619 billion;

- June 2006: Increased charter capital to VND 21.238 billion;

- March 2007: Increased charter capital to VND22.3 billion;

- 2008: Increased charter cpaital to VND26.98 billion.

- 2009: Increased charter capital to VND33.72 billion.

- Jan 19, 2011: Officially traded on Hanoi Stock Exchange (HNX).

- 2011: Increased charter capital to VND67.45 billion.