With smartphones becoming central to modern-day communication, work, and entertainment, battery life remains one of the most crucial factors for users. As demand grows for budget-friendly devices that can power through a full day—or more—without frequent charging, manufacturers are stepping up with phones that pack both high-capacity batteries and fast-charging technology.
Here are five smartphones priced under Rs 20,000 in May 2025 that stand out for their battery performance, offering long usage times, fast recharging, or both.
iQOO Z10 – Rs 19,999 (after Rs 2,000 bank discount)
The iQOO Z10 leads the pack with a massive 7,300mAh battery, among the largest in its segment. Designed for power users, the phone can easily run for over two days on a single charge. It also supports 90W fast charging, which can fully charge the device in just over an hour. Ideal for gaming, video streaming, and long calls, the Z10 delivers strong performance and endurance.
OPPO K13 – Rs 17,999
The OPPO K13 is equipped with a 7,000mAh graphite battery and 80W SuperVOOC fast charging. According to the company, the phone can reach 62 per cent battery in just 30 minutes, with a full charge taking under an hour. With OPPO’s software optimisations, the K13 is targeted at users who want a reliable daily driver with minimal charging breaks.
realme P3 – Rs 15,999
The realme P3 features a 6,000mAh battery and supports 45W fast charging. The company claims the phone delivers up to 17.5 hours of YouTube playback, 8.5 hours of gaming, and over 90 hours of Spotify streaming on a single charge. Additional highlights include IP69/68 water and dust resistance, a 120Hz display, and the Snapdragon 6 Gen 4 chipset.
vivo T4x – Rs 13,999
The vivo T4x offers a 6,500mAh battery combined with 44W FlashCharge support. Paired with a power-efficient Dimensity 7300 processor, the phone is capable of handling gaming, video streaming, and multitasking with ease.
Also Read: Top 5 Android smartphones under Rs 30,000 to buy in May 2025
It stands out in the sub-Rs 15,000 segment for its long battery life and fast charging at an affordable price point.
OnePlus Nord CE4 Lite – Rs 17,998
Rounding out the list is the OnePlus Nord CE4 Lite, which comes with a 5,500mAh battery and 80W fast charging. While its battery isn’t the largest in this group, it offers a well-optimised experience with the latest OxygenOS 15 and AI features. The device is designed for users who want reliable battery life along with modern software and premium styling.
