Vivo reportedly mass-producing 11,970mAh smartphone battery

A Weibo tipster says Vivo is mass-producing a smartphone battery with a rated capacity of 11,970mAh, a cell the source places in the 12,000mAh class. The leak comes from Digital Chat Station and uses a color reference to point to Vivo rather than naming the company directly.

Battery details and manufacturing status

Digital Chat Station reports the largest battery currently in mass production has a rated capacity of 11,970mAh. The tipster did not identify which model will use the cell, and added that Vivo has an even larger battery planned for a future device with a larger display. "Rated capacity" here refers to the nominal figure the manufacturer assigns to the cell.

This claim follows an earlier post from Digital Chat Station in February, when he said Vivo was testing a phone with a "single-cell silicon battery" with a typical capacity between 11,000mAh and 12,000mAh. That device was still in testing at the time, and the latest post suggests the battery design may have progressed toward mass production.

Form factor, processors and related device reports

In answers to reader questions, Digital Chat Station addressed other Vivo and iQOO possibilities. When asked about Vivo's next foldable and whether it would use a flagship 2nm processor, the tipster said a 2nm chip "would not be a problem," but that Vivo still needs to settle on the phone's form factor, reportedly weighing either a large foldable or a wider candybar design. The possibility of a wider phone echoes a previous claim that Vivo could launch a wide-screen candybar flagship in 2027.

Another reader asked about a flagship with a mid-sized display, seemingly referring to iQOO; the tipster replied, "I guess so," a brief response that does not confirm any specific device or launch plan. Separately, a report claims iQOO is developing a 7-inch mid-range phone with a battery exceeding 10,000mAh, tentatively scheduled to arrive in China around mid-2027.