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High Capacity Power Banks: A Lie in the Tech Indust As smartphone usage grows, so does the popularity of power banks. We know that the more energy a power bank stores, the more times it can charge a device. How do you know the amount of energy a power bank contains? We measure a battery's electrical capacity by its mAh (milliamp Hours). As technology thrives and demand increases, we're beginning to see power banks on the market with a battery capacity of up to 30000mAh. In contrast, the size of the average smartphone battery tends to be under 6000mAh. Most of us assume that the higher the power bank’s capacity, the better it is, but is this true?

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