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The Energizer Hard Case P28K vs the Pixel 8 Pro.

Credit: Hadlee Simons / Android Authority
  • The Energizer Hard Case P28K smartphone has been revealed on the sidelines of MWC 2024.
  • This phone packs a 28,000mAh battery, making it ideal for markets with an unreliable electricity supply.
  • The company behind these Energizer phones doesn’t have a great track record for actually releasing them.

We’ve previously seen niche brands offering smartphones with absolutely gigantic batteries. But Avenir Telecom is taking the cake with a 28,000mAh Energizer-branded Android phone.

The Energizer brand licensee debuted the Hard Case P28K smartphone on the sidelines of Mobile World Congress (MWC). And the main selling point is indeed that 28,000mAh battery. This battery capacity dwarfs mainstream phones like the Samsung Galaxy S24 Ultra (5,000mAh) and OnePlus 12 (5,400mAh).