As smartphone usage continues to surge in India, battery life has become a key deciding factor for consumers seeking devices that can keep up with their daily demands. With increased dependence on mobile apps, video streaming, gaming, and social media, users now expect their smartphones to last well beyond a single day of use.
Recognizing this shift, brands like Realme, POCO, iQOO, and Tecno are prioritizing larger batteries and power-efficient technologies in their latest models. These companies are focusing not just on battery capacity—often exceeding 5,000mAh—but also on optimizing software to ensure longer screen time and faster charging. This trend underlines the growing importance of endurance in smartphones, making battery life as critical as performance and camera quality in today’s competitive market.
“Traditionally, big batteries came with trade-offs like bulkier design and heating issues, but POCO is changing that. With the X7 Pro 5G launched in January 2025, we introduced the largest and most advanced battery of 6550mAh capacity, using Silicon Carbon Technology in a slim, lightweight design — paired with AI-driven optimization and thermal control for long-term efficiency. We’re also bringing these innovations to our affordable segment through the M and C series, ensuring powerful, reliable battery performance across the portfolio. POCO is not just meeting expectations — we’re setting new standards for smart, sustainable battery innovation,” Himanshu Tandon, Country Head, POCO told Financial Express.
The advent of 5G connectivity, high refresh rate screens, AI-driven applications, and increased multitasking has significantly raised the bar for power consumption. While fast charging offers some relief, it’s not always feasible to pause and recharge during a hectic day. As a result, large-capacity batteries are no longer just a premium add-on—they’ve evolved into an essential feature for today’s power-hungry smartphones.
Realme has introduced a groundbreaking concept smartphone that packs a massive 10,000mAh battery into an impressively slim 8.5mm chassis, weighing only 212 grams. This innovation is made possible by advanced silicon-anode battery technology, which offers a remarkable energy density of 887Wh/L—far surpassing the capabilities of conventional lithium-ion batteries found in most current smartphones.
“It’s not just about bigger batteries-it’s about delivering the confidence and freedom that today’s users value most. That’s why big battery phones have become the new standard for flagship devices this year. Also, the trend is not limited to just bigger battery, it’s also about optimised usage, to ensure that unnecessary battery drains are not impacting the overall performance and productivity of devices. Keeping in mind the evolving needs of consumer, realme is coming up with the GT7 series which has been created to provide optimal solutions to the needs of the consumers,” A Realme spokesperson mentioned.
The device also showcases Realme’s “Mini Diamond Architecture,” which incorporates the world’s most compact Android motherboard at just 23.4mm in width. This allows for not only ultra-fast 100W charging but also enhanced safety features, including a triple cold press technique designed to minimize the risk of battery swelling.
Smartphones with high-capacity batteries are no longer just ticking a spec sheet box—they’re making a meaningful difference in everyday user experience.
“Across the industry, there’s a growing focus on balancing high-capacity batteries with intelligent software and efficient hardware design. At Tecno, this approach has been especially relevant in Tier 2 and Tier 3 markets, where long-lasting performance and power efficiency translate directly to user trust and satisfaction,” Arijeet Talapatra, CEO, Tecno.
Fortunately, advancements like silicon-carbon battery tech and more efficient internal layouts mean users no longer have to compromise between slim design and all-day power. The competition to deliver longer-lasting phones is intensifying, and in 2025, it’s becoming clear: when it comes to smartphone batteries, bigger truly means better.
As per Nipun Marya, CEO, iQOO, a large-capacity battery is no longer a luxury but a necessity, especially for people who are always on the go.
“At iQOO, we understand these evolving needs. That’s why we were the first to introduce India’s biggest battery smartphone, featuring a massive 7300mAh battery — lasting up to 2 days on a single charge. We’ve always built big battery smartphones for our Megataskers — the iQOO Neo 10R comes with a 6400mAh battery, and our upcoming iQOO Neo 10 will feature a massive 7000mAh powerhouse. By making such cutting-edge battery technology widely accessible, iQOO is redefining what users should expect from a mid-range device. Our goal is to make advanced technology accessible to all, especially the next generation of users who demand more from their smartphones,” Nipun Added.
