Realme shows off prototype phone with 10,000mAh battery

In the build-up to the Realme GT 7 global launch, the company shared details on a prototype phone with a massive 10,000mAh.

The most impressive thing about this prototype is that it measures only 8.5mm thick and weighs 215g. Realme used a battery with 10% silicon anode and achieved an energy density of 887Wh/L. To maximize the internal volume that is available for the battery, the company shrunk the phone’s motherboard to just 23.4mm tall – that’s the smallest on an Android phone yet!

Chace Xu, the President of Realme Global Marketing, posted a 2-minute unboxing video that shows off the prototype device and gives details on how it was created. Here are some screen grabs from that video:

Realme GT 10,000mAh prototype

And here is the video itself:

The unboxing video of the realme GT 10,000 mAh concept phone is here! Get ready for unparalleled power and performance! pic.twitter.com/22WWiIjbA8

— Chase (@ChaseXu_) May 6, 2025

Again, this is just a prototype – the Realme GT 7 phones will have smaller (but still pretty huge) batteries.

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