Honor testing 15,000mAh phone batteries for one-week battery life

Honor is reportedly testing phone batteries with capacities between 14,000mAh and 15,000mAh. Words for this come from tipster Digital Chat Station, who says the main goal of that bonkers of a battery is a phone that lasts a full week on a single charge.

A week-long battery would change how you carry your phone. Many people keep a power bank in their bag for long days out. A phone that lasts several days could make that habit unnecessary. Delivery riders, outdoor workers and frequent travelers would notice it first. They often charge a phone two or three times a day.

Honor keeps raising the battery ceiling

Honor’s Win line started in December 2025 with 10,000mAh batteries. In June, the Honor X80 Pro Max went on sale with an 11,000mAh battery. Honor says the phone earned a Guinness World Record for the longest live stream battery test. It ran for 26 hours, 8 minutes, and 34 seconds.

The Honor Win 2 series is the latest step. It launched in China on October 21. Both the Honor Win RT 2 and the Honor Win Turbo 2 carry 12,070mAh batteries. The Honor Win RT 2 charges at 90W over a wire. Honor went from 10,000mAh to more than 12,000mAh in under a year.

The tipster has been accurate about Honor’s battery plans in the past. The tipster previously reported that the company had started trial production of a 12,000mAh battery pack, before Honor introduced the 12,070mAh battery in the Win RT 2.

However, fitting a 14,000mAh or 15,000mAh battery into a phone won’t be easy. Larger batteries generally add weight and thickness, while also creating additional challenges for heat management. Honor hasn’t shared any details about how it plans to handle these issues or when a phone with such a large battery could arrive.

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