Best Battery Life Phones Under 12,000 In 2025: Nowadays, a large battery in smartphone is very important because people use their smartphone for whole day. So if you are one of them and currently looking for a best battery life phone under 12,000 budget, then you should definitely read this article till end, because here I have provided a list of top 3 best battery life phones under 12,000 in August 2025.
These phones come with a massive battery pack with fast charging support too. Moreover, you get a gaming chipset that enhances performance of your phone, and you get a very good quality camera setup, a large display, etc. Along with that, you can get these phones at cheaper price via some cashback offers in Flipkart live sale.
Read More: Best Gaming Phones Under 12,000 In India
1. iQOO Z9x 5G
iQOO Z9x50 is the first phone of our list that comes with 6000 mAh long lasting battery that easily lasts for 2 days, and you do not need to take battery anxiety, because you also get 44W flash charging support. The phone comes with 6.72 inch FHD+ LCD display with a 120 Hz adaptive refresh rate and up to 1000 nits peak brightness.
You get very good viewing experience from this phone’s display. The phone is available in 6GB or 8GB RAM variants with 128GB internal storage option that is expandable up to 1TB via MicroSD card. In rear section, you get 50 MP AI main camera, and in front you get 8 MP selfie camera. The phone is equipped with Snapdragon 6 Gen 1 processor that gives top notch performance on normal daily tasks. iQOO Z9x50 phone’s 6GB RAM and 128GB internal storage variant comes at a price point of 11,999 rupees in India.
2. OPPO K13x 5G
Oppo K13x 5G phone is the second phone of our list that comes with a 6.67 inch LCD with HD+ resolution display, and you get a very smooth 120 Hz refresh rate. The phone is also equipped with long lasting 6000 mAh battery pack. You also get 45W SuperVOOC fast charging support in this phone that quickly charges your phone in just one hour. In rear section, you get 50 MP AI dual rear camera setup, and in front you get 8 MP selfie camera. Brand also promises 2 years of OS upgrades and 3 years of security patches in this phone. You have to spend around 11,999 rupees to purchase this phone in 4GB RAM and 128GB internal storage variant.
Read More: Best Camera Phones Under 12,000 In 2025
3. Redmi 14C 5G
Finally, Redmi 14C 5G phone is the third and last phone of our list that comes with a massive 5160 mAh battery, and you get 18W fast charging support, but you have to purchase 18W fast charger separately because you get only 10W charger in box. The phone is equipped with Qualcomm Snapdragon 4G and 2 processor that provides very good performance. Even after heavy use, you do not feel any kind of lag.
You can purchase this phone in different RAM and storage configurations that include 4GB or 6GB RAM with 64GB to 128GB internal storage; however, its internal storage is expandable up to 1TB. In rear section, you get 50 MP + 2 MP AI dual rear camera setup, and in front you get 8 MP selfie camera. For security purposes, company also provides side mounted fingerprint sensor, and you get a premium Starlight design on this phone that looks very cool. You have to spend around 9,498 rupees to purchase this phone in 4GB RAM and 64GB storage option.