Siro, a subsidiary of Togg, produces lithium-ion battery packs at a factory adjacent to the Togg assembly plant in Gemlik, Bursa Province. This co-located production model ensures that Turkey's indigenous EV platform is powered by domestically manufactured batteries, reducing dependence on Chinese, Korean, or European battery suppliers that dominate the global EV supply chain.
Battery manufacturing is the most strategically important component of EV sovereignty — batteries represent 30-40% of an EV's value and cost, and the technology is dominated by a small number of Asian suppliers (CATL, BYD, LG, Samsung SDI, Panasonic). Turkey's establishment of domestic battery production, even at moderate scale, positions it to participate in the global battery value chain rather than remaining a pure assembler of imported components.
The strategic context includes Turkey's access to boron reserves — it holds approximately 73% of global boron deposits — which are relevant to solid-state battery research. While current production uses conventional lithium-ion chemistry, Turkey's mineral wealth positions it for potential roles in next-generation battery technologies that could leverage its boron advantage.