Vivo Begins Mass Production of Nearly 12,000mAh Smartphone Battery

Vivo has reportedly started mass production of a smartphone battery with a rated capacity of 11,970mAh, placing it just shy of the 12,000mAh mark and signaling a new step in the race for longer-lasting phones. The claim comes from well-known Weibo tipster Digital Chat Station, who referred to a "blue" manufacturer, widely understood to mean Vivo. The tipster did not say which handset would use the battery or when it might launch.

The report follows earlier information from the same source in February, when Vivo was said to be testing a single-cell silicon battery with a typical capacity of between 11,000mAh and 12,000mAh. At that stage the device was still in testing, but the latest claim suggests the battery has moved into mass production. Silicon-based cells have become a focus for smartphone makers because they can pack more energy into a given space than conventional lithium-ion designs.

Beyond the battery, Digital Chat Station also shared details about Vivo's next foldable smartphone, expected in 2027. Asked whether the device would use a flagship 2nm processor, the tipster indicated the chipset would not be a problem. However, Vivo has reportedly not finalized the design and is weighing either a large foldable or a wider form factor.

Earlier reports have also suggested that Vivo could introduce a wide-screen candybar flagship in 2027. Separately, the tipster responded briefly to a question about a flagship phone with a mid-sized display, apparently referring to an upcoming iQOO device, though the reply did not confirm a specific model or launch timeline.

The claims remain unofficial and Vivo has not commented on the reports. If accurate, a battery close to 12,000mAh would represent a significant increase over the capacities common in mainstream smartphones today, potentially appealing to users who prioritize battery life over thinner designs.