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How long does this 28,000 mAh phone battery last?

Answer: A week.

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If you feel like your phone is always dying too quickly, then you’ll like the Energizer Hard Case P28K. Unveiled by Avenir Telecom last month at Mobile World Congress in Barcelona, the device has a whopping 28,000 mAh battery that can keep it going for up to a week.

Unfortunately, that Energizer Bunny-level battery comes at a price, though not a monetary one — the device is 27.8 mm (1.1 inches) thick and weighs 570 grams (1.25 pounds). For comparison, the iPhone 15 is 7.8mm thick and only 171 grams. The Hard Case P28K can be fast-charged at up to 33W and comes with a 36W charger.

It also comes equipped with three rear cameras, one front camera and the ability to shoot 4K video. Its screen is 6.78-inch FHD+ and it has an IP69 rating. While it isn’t capable of 5G connectivity, it does have 8GB of RAM and 256GB of storage and runs Android 14. Avenir said it was created for users in countries without a reliable of regular power supply, so it won’t be available for purchase in the U.S. The device is currently slated to go on sale in October for about $300.