Trying to find a smartphone with a strong battery life under ₹20,000 is not an easy task for anyone. It is quite hard. The reason is there are too many smartphones available currently in the market. All offer great battery life with great processors, displays, and cameras too. That gives more challenge to our team.

But we came with three of the best smartphones that give you the best battery life with fast charging and a great camera. These smartphones are from iQoo and in Infinix, so go and check all of them and if you like any of them. Then go and purchase now from their stores.

iQOO Z9

First and best choice is iQOO Z9. For those who want a with best features in the phone with a reliable battery. Then it is for you. It features a 5000 mAh battery with 44W fast charging. It is powered by the MediaTek Dimensity 7200 chipset and comes with a 8 GB RAM.

For camera persons, the Z9 includes a 50 MP + 2 MP rear camera and a 16 MP front camera for clear selfies. Then 6.67-inch AMOLED display with a 120Hz refresh rate. It is now available at ₹18,499, it runs on Android 14 and even includes a bloatware removal option to simplify your experience.

Top 3 best battery phones under 20000 in 2025

iQOO Z9s

The second option is iQOO Z9s. It improves on battery with a 5500 mAh battery. It supports 44W fast charging, and you can charge it in 40 to 50 minitues. Now, it is Powered by the MediaTek Dimensity 7300 processor and comes with 8 GB RAM.

It has 6.77-inch AMOLED display has a 120Hz refresh rate. In camera, it comes with a 50 MP + 2 MP rear camera setup and a 16 MP front camera. The charges you have to pay is ₹19,999.

Infinix Note 40 Pro 5G

The Infinix Note 40 Pro 5G is a best in terms of battery and storage. It have a 5000 mAh battery with 45W fast charging, keeping you connected all day. It have MediaTek Dimensity 7020 processor, while the 8 GB RAM and 256 GB storage. In photography It comes with a 108 MP + 2 MP + 2 MP triple rear camera and a 32 MP front camera. Now, it comes at ₹18,172 on different platforms.

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