If you value battery life over slimness on your smartphone, then this is something to look out for. Vivo is reportedly working on the ultimate silicon single-cell battery, an enormous 11,970mAh unit, that puts out more capacity than you'd usually go for if size mattered the most.
Vivo is testing a prototype smartphone with a 11,970mAh single-cell silicon battery
The battery manufacturer with the moniker 'blue' on Chinese social media (as spotted by Weibo tipster Digital Chat Station) is creating this type of ultra-high capacity battery. At the moment, Vivo is testing a prototype with the silicon single-cell battery inside. Of course, we don't know yet which model of phone Vivo will use this battery on.
- Battery Capacity: 11,970mAh
- Battery Technology: Single-cell silicon
- Battery Capacity (Future): Larger than 11,970mAh
The current prototype being tested has a 11,970mAh battery as its most important spec. That's the highest mass-produced battery capacity, as claimed by the tipster. And there's an even larger battery in the works for another device with a larger display area.
At the moment, Vivo is working out the form factor of the device the mega battery will reside in. That means there are two possibilities at the moment, either an extra large foldable phone or an extra wide (more like a normal phone) handset. That's a sign the hardware is in its very early conceptual stages.
In general, the trend right now is larger batteries, as iQOO is reportedly working on a 7-inch mid-range phone with a 10,000mAh+ battery to be released in mid-2027. We previously reported on the Vivo S2 FE, which offered a 10,000mAh battery and IP69, for about $405. The 11,970mAh capacity would blow that out of the water, for sure.
If you're interested in absolute battery life, then pay attention to how Vivo shapes the form factor. It's a challenging feat to pull off a single cell silicon battery and still make it ergonomic. We don't have any pricing details or expected release date for this specific prototype yet.
Source: GIZMOCHINA


Single cell silicon at that density is a thermal nightmare. I bet the phone gets hot enough to cook an egg on it.