15000mAh battery phone is still a concept, but these big battery smartphones are available now

The idea of a smartphone carrying a 15000mAh battery is still in the experimental stage. Brands such as Realme have presented prototypes using technologies like silicon-anode cells to achieve this capacity in slimmer designs. These concept models are aimed at offering several days of usage on one charge, reducing dependency on external power banks. However, they are not yet available to the public as further research on safety and long-term performance is still underway.

Until such devices are commercialized, buyers can still choose from smartphones already in the market that come with large batteries offering extended usage. Handsets with 7000mAh or higher capacity have emerged as a strong option for users who need long power backup for gaming, streaming, or navigation without frequent recharging.

Some of the currently available options include:

Oppo K13 5G – Equipped with a 7000mAh battery and 80W SuperVOOC fast charging, this device also features the Snapdragon 6 Gen 4 processor and a 120Hz AMOLED display, balancing efficiency with endurance.

iQOO Neo 10 – This phone carries a 7050mAh battery supported by 120W fast charging. With the Snapdragon 8s Gen 4 processor and a 120Hz AMOLED screen, it is designed for performance-oriented users.

Vivo T4 – Featuring a 7300mAh battery with 90W fast charging, the Vivo T4 has a 6.77-inch quad-curved AMOLED display running at 120Hz, making it suitable for both entertainment and long usage hours.

Redmi 15 5G – Positioned as a more affordable choice, the Redmi 15 5G includes a 7000mAh battery paired with 33W fast charging. It runs on the Snapdragon 6s Gen 3 processor and has a 6.9-inch IPS LCD panel with a 144Hz refresh rate.