Honor is reportedly testing smartphone batteries of 14,000 to 15,000mAh, according to the Chinese Digital Chat Station. The target is a phone that lasts about seven days on one charge, which would be well beyond anything on sale today.
Honor has not confirmed any of this. The tipster gave no model name, launch date or price, so treat it as an early-stage rumour about what the lab is trying, not a product plan.
The idea is less far-fetched than it sounds, because Honor keeps pushing capacity up. Its last 12 months show the climb: a 10,000mAh Honor Win in late 2025, then 11,000mAh in the X80 Pro Max this June. Notebookcheck reported the tip and lists the newer Win RT 2 and Win Turbo 2 at 12,070mAh; the Win RT 2 also charges at 90W over a cable.
Size is the obvious obstacle. A bigger cell usually means a thicker, heavier phone and more heat to manage, and Honor has not said how it would deal with any of that. For anyone who travels a lot or works away from sockets, a battery that lasts a week would be the selling point, if the phone stays a reasonable size to hold.
Honor has pushed the idea across several lines in a short time, and the company has not said whether the 14,000mAh and larger cells would reach a mainstream model or stay limited to rugged and special-edition phones. The tipster also did not say which charging speed or chip such a phone would use, and those details would shape how the extra capacity feels in daily use.
Until Honor says something itself, the numbers remain a tipster’s claim. The company’s own announcements for its next Win and X-series phones are the place to watch.
