EV battery startup SES announces Gigafactory in Shanghai, reveals a 107 Ah Li-Metal battery Spread across 300,000 square-foot, the upcoming Gigafactory is scheduled for completion in 2023 EV battery startup SES (formerly known as SolidEnergy Systems) revealed in-house developed 107 Ah Li-Metal battery, which it has named Apollo, at SES Battery World on 3 November.