A new leak from tipster Digital Chat Station suggests that a mid-range smartphone with a massive 10,000mAh battery is currently being tested for release in the first half of 2026. If accurate, it would be the first time a mainstream smartphone hits a five-digit battery capacity.
Though the source didn’t mention a specific brand, the device could be from Realme, which previously showcased a concept phone with a 10,000mAh battery.
Silicon-carbon battery is doing the magic
The rise of such large-capacity batteries is closely tied to the growing adoption of silicon-carbon negative electrode battery technology.
Compared to traditional graphite batteries, which max out at around 372mAh per gram, silicon-carbon batteries can theoretically deliver up to 4,200mAh per gram (via mydrivers). That higher capacity allows manufacturers to significantly boost battery life without drastically increasing the size of the battery unit.
Realme’s concept battery reportedly uses a 10 percent silicon ratio and offers an energy density of 887Wh/L, one of the highest in the industry. That makes it easier to imagine a future where massive batteries don’t require bulky designs.
There’s no word yet on an official launch, but with new leaks surfacing, the idea of a 10,000mAh battery phone doesn’t seem far off. Perhaps even more surprising, the source says the phone is just 8.5mm thick, comparable to many standard smartphones today.
While its hard to believe, phones with large silicon-carbon batteries are already available in China with a slim design. The Honor Power, for instance, has a 8000mAh cell in an 8mm chassis.
If Realme, or another manufacturer, brings such a phone to market, it could start a trend of ultra-high-capacity phones that prioritize endurance and slim design.
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The post World’s first 10,000mAh smartphone could launch in 2026, and it’s not a brick appeared first on Gizmochina.
