As users juggle longer days and heavier screen time, battery endurance is becoming just as important as fast charging. While most brands are locked in a race to push charging speeds past 150W and 200W, Realme is betting on a different headline altogether. With the Realme P4 Power, the brand claims to launch India’s first smartphone featuring a 10,001mAh battery, shifting the focus squarely to longevity over speed.
That’s almost double what most mainstream smartphones are providing these days. Among many other things, this move signals a deliberate shift away from the industry’s obsession with faster charging and towards a simpler promise: fewer charging breaks and longer-lasting endurance.
Ahead of the launch, MySmartPrice had a conversation with Francis Wong, Chief Marketing Officer, Realme India, who shared that the company believes battery anxiety remains one of the most persistent frustrations for Indian smartphone users, especially as screen time, gaming, and travel usage continue to rise.
Hence, rather than trying to cut off some minutes from the charging time, Realme is betting that users would rather charge once at night and forget about their battery the next day.
The idea, however, didn’t begin as a commercial product. “When we first did a 10,000mAh concept phone, and later even a 15,000mAh concept, it was more about showing what was possible.” He further adds, “But when we saw the reaction from media and consumers, that’s when we felt confident this could become a real product.”
Development on the P4 Power began in September 2025, with the first working model ready by December. “In three months, we moved from concept to reality,” Wong says.
Why Capacity Mattered More Than Charging Speed
Realme was amongst the first players to offer 150W charging as far back as 2021. But Wong says faster charging never really changed user behaviour.
“Even when we launched 150W charging, people still charged their phones when they were sleeping,” he says. “They don’t want to charge during the day. Even five minutes feels like a burden if you’re outside looking for a cable.”
So, the company felt that the bigger problem wasn’t how fast a phone charges, but how often it needs to be charged.
“Consumers don’t want to charge their phone many times, no matter how fast it is,” Wong explains. “They want to charge once at night and then forget about it the whole next day.”
And that’s the philosophy that went behind the P4 Power. While phones with 6,000mAh or 7,000mAh batteries already give you enough screen time, if not more, Realme says that its new smartphone is built for heavier, unpredictable usage such as long gaming sessions, business travel, or weekends spent glued to social media.
“This phone is for non-daily situations,” Wong says. “When you’re travelling, gaming heavily, or using your phone for many hours, you don’t want to think about charging at all.”
Additionally, the phone supports 80W fast charging, and Reame claims that it can reach 12% in 5 minutes, 50% in about 36 minutes, and a full juice up will take around 85 minutes, which is still fast considering the huge battery size.
Fitting a Power Bank Into a Smartphone
Deciding to add a 10,001mAh battery is one thing, but putting it into a smartphone while it still feels comfortable and not bulky is another. And as per the CMO, that was the hardest part of the project for them.
“The main engineering headache was the battery itself,” Wong said. “Earlier, we couldn’t control the thickness enough to sell it. Consumers have a limit, no matter how big the battery is, if the phone is too thick, they won’t buy it.”
The breakthrough came with a new generation of silicon-carbon battery technology. By increasing silicon content from 10% to 16%, Realme was able to improve energy density and reduce the physical size of the battery. A curved display further helped make the phone look slimmer in the hand.
Surprisingly, thermals, Wong says, were less of a challenge than expected. “Heating mostly comes from the processor and charging, not from battery size,” he explains, pointing to large vapour-chamber cooling systems and a bypass-charging feature that powers the phone directly when plugged in, reducing heat when gaming and charging at the same time.
Longevity as a Selling Point
Along with all the claims, Realme is also pitching durability as a key factor in this phone. The P4 Power is rated for 1,650 charge cycles, which is significantly higher than the current industry benchmark of around 1,200, and comes with a four-year battery replacement guarantee if health drops below 80%. The company claims the battery can retain usable health for up to eight years under normal usage.
“With such a big battery, you charge it less often,” Wong says. “That’s why we’re confident it can last eight years.” The only way to significantly shorten that lifespan, he adds, is by charging it “crazily: two or three times a day”.
Additionally, Realme has also updated its software policy, promising three major Android updates and four years of security patches.
A Broader Reset is Underway
There’s also a wider strategy shift going on for Realme in India. Once known as a fiercely online-focused brand, Realme has been forced to adapt as more Indian consumers prefer buying phones offline. “If we didn’t move to offline, the brand wouldn’t be sustainable in India,” Wong says.
To manage that transition, Realme moved its Number series to offline retail, while keeping the new P-Series online as its value-driven lineup.
“P-Series stands for Pioneer,” Wong explains. “It’s where we introduce new technologies at affordable prices, and where we carry our original value-for-money DNA.”
Students and heavy users remain the primary audience for the P4 Power, but Wong hints that large batteries will soon become far more common across Realme’s portfolio.
“This year you’ll see 8,000mAh, 9,000mAh and more 10,000mAh phones from Realme,” he says. “We want to stay a notch above the competition in battery technology.”
With the P4 Power, Realme is clearly trying to change the conversation around smartphone batteries. Instead of running behind higher charging speeds this time, the company is betting that fewer charging breaks and longer-lasting endurance will matter more to users who spend most of their day on their phones.
Whether a 10,001mAh battery becomes mainstream or remains a niche feature will ultimately depend on how the phone performs in everyday use.
