3 smartphones with the biggest battery in 2025: The longevity of the battery has become the biggest factor to buy a new smartphone. Users not only want power-dens performance, but also want long-lasting phones running for more than a day when charged. In 2025, several premium smartphones have taken a step to complete it by matching large battery capacity with high-end features.
IQOO 13 5G
IQoo 13 5G is a great smartphone with a large 6000mAh battery that supports flash charging through USB Type-C port. The flagship variant has the top-of-the-line Snapdragon 8 Elite Chipset, which is a great performance in itself. It is equipped with a 6.82-inch QHD+ Ltpo AMOLED screen which also has a 144Hz refresh rate. The smartphone has a triple camera setup on the back side with three 50mp cameras, ring LED flash and 32MP front camera. It comes with industry-leading durability with IP68 and IP69 certification. Although it is impressive in terms of night mode and normally performance, it does not have a periscope lens and comes with several pre-install apps.
Vivo x200
Vivo X2 also has a good battery life of 5800mAh cells and flash charging support. This MediaTek dimensions are powered by 9400 chip and comes with 12GB of RAM for smooth multitasking. It comes with a 6.67-inch FHD+ AMOLED display with a 120Hz refresh rate. It comes with a triple 50mp camera with LED flash at the back and 32MP camera at the front. Vivo X2 is famous for its incredible photography and videography abilities. Strong construction and vibrant screen make it the most ideal for multimedia and productivity purposes, but wireless charging and lack of some blotware apps put it slightly back.
Xiaomi 15
It is powered by Snapdragon 8 Elite Processor and has 12GB of RAM. It has a 6.36-inch FHD+ Ltpo OLED display with a 120Hz screen refresh rate. The camera has a triple 50MP leica camera setup with dual-calf LED flash and 32MP selfie camera. It offers excellent performance and smooth battery backup in light, compact design. This patchy may be prone to the Pachy Performance throtting when subject to heavy loading and light contrast falls in camera shots.
Huge battery and fast charging combo
The four smartphones include high capacity batteries and fast charging capabilities that attract power users. IQO 13 and OnePlus 13 include 6000mAh batteries that ensure prolonged use, while Xiaomi 15 and Vivo X200 try to give balanced power using slightly small but efficient batteries. The four also include the support of fast charging in some form or the other, which reduces downtime for busy people.
