A new leak reveals just how big the batteries inside Huawei’s upcoming flagships are.

According to a post on Chinese social media site Weibo (via GSM Arena), the Huawei Mate 30 will have a 4,200 mAh battery, while the Mate 30 Pro will have a bigger 4,500 mAh battery. This means the Mate 30 will have a 5% bigger battery compared to its predecessor, while the Mate 30 Pro will have a 7% bigger battery compared to the Mate 20 Pro.

Huawei hasn’t confirmed if the batteries in the new flagships will be that big. If the leak proves true, then they they can be expected to give the new flagships longer battery life, thanks also in part to the new Kirin 990 chipset expected to come in the devices.

Kirin 990

An earlier report revealed that all models in the Mate 30 lineup, including the standard, Pro and Lite versions, are going to have the Kirin 990 chipset powering them. This new chipset will allows all Mate 30 models to record videos in 4K resolution at 60 frames per second.

The new chipset will allow the Mate 30, and future Huawei smartphones, to join rivals like the iPhone 8 (and newer) and Samsung Galaxy 9 (and newer) in offering 4K 60fps video recording.

Revolutionary Camera

While all models in the Mate 30 lineup provide support for 4K 60fps video capture, the Mate 30 Pro will also give mobile photographers, and anyone who buys it, the ability to take breathtaking stills.

The Mate 30 Pro is expected to feature two 40MP lenses. The first 40MP lens is a 1/1.5" sensor with f/1.6 - f/1.4 aperture. It has RYYB pixel layout. The second 40MP lens is a 1/1.7" 120° ultrawide lens. Both cameras have Cine lens features that are useful when capturing videos. The two sensors are joined by an 8MP telephoto sensor with 5x zoom.

These specs, along with the leaked battery sizes, give the idea that Huawei wants its upcoming flagships to appeal to power users.

Harmony OS

The Weibo post didn’t mention anything about the devices using Android or Huawei’s proprietary OS. Earlier reports indicate that the Mate 30 Lite will have a Chinese model running Harmony OS.

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A leak reveals huge battery sizes for Huawei's Mate 30 and Mate 30 Pro. ERIC PIERMONT/AFP/Getty Images