Realme just teased a battery beast that streams video for 50 hours straight.
By Veronica Wade Published: Aug 25, 2025
Crazy-big batteries aren’t exactly shocking anymore, especially since Chinese brands started experimenting with silicon batteries. If you haven’t heard of them, here’s the deal: silicon batteries are a type of lithium-ion battery that swap out the traditional graphite anode for a silicon-based composite. Why does this matter?
Well, silicon can hold a lot more lithium ions than graphite, which means higher energy density. Translation: you can cram more power into the same space, letting devices get thinner while keeping the battery life insanely long. And we’ve already seen regular smartphones rocking 7,000mAh batteries – or even more – but Realme is clearly not interested in “just” big.
A few days ago, the company teased that it is working on a phone with a battery over 10,000mAh. And now, it is giving us the real shocker: the next phone will pack a jaw-dropping 15,000mAh battery. Yep, you read that right. The teaser images actually show “15000mAh” written right on the back cover, making it impossible to miss.
To put that in perspective, that is more juice than most rugged phones out there, which usually have to bulk up just to fit their batteries. And yet, in the teaser, Realme’s phone doesn’t look unusually thick at all. It is packing monster power without turning into a brick.
Zooming in reveals the “15,000mAh” text stamped on the back of the phone. | Image credit – Realme
The company isn’t shy about bragging either. It claims the phone can handle 50 hours of nonstop video streaming. Wild, right? And it doesn’t stop there: Realme says you can get up to 18.75 hours of video recording on a single charge, teased with a cheeky little video that really drives the point home.
If you’ve been keeping up with Realme’s battery experiments, none of this should come out of the blue. Earlier this year, it showed off a GT Concept Phone with a 10,000mAh battery. That phone already hinted at the insane potential of silicon-anode tech. The new 15,000mAh model will probably use the same silicon-anode chemistry, just scaled up.
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Would you be excited to own a phone with a 15,000mAh battery?
Absolutely, bring on the nonstop power! Maybe, but I care more about other features.No way, that sounds overkill.
Of course, like the 10,000mAh GT Concept, this could just be another concept phone, which means it might not hit store shelves right away. But Realme promises more details on August 27, and that is likely when we will find out whether this beast will actually be something we can buy – or if it is just a tech teaser.
Still, here’s the silver lining: Realme is teasing this phone globally, not just in China, which suggests that when it does launch, it should be available internationally. But does that mean the US?
Probably not – at least not officially. While you can sometimes snag Realme phones on sites like Walmart, official availability and network compatibility in the US remain tricky. And if you do decide to import one, make sure it works with your phone carrier’s network before get it.
Still, for anyone who has ever dreamed of a phone that can go days without needing a charger, this should be exciting news. So, keep your eyes peeled – when this battery beast finally lands, it is going to be a story no power-hungry phone fan will want to miss.
