What is the Average Battery Life of an iPhone 6s Plus?

The average battery capacity of a new iPhone 6s Plus is approximately 12 hours of internet browsing and up to 80 hours of audio playback. When you purchase a refurbished iPhone the battery has likely been slightly depleted but at Frank We guarantee our batteries retain a minimum of 80% of their original capacity (which Apple has declared sufficient for efficient battery performance).

Apple's lithium-ion batteries are designed to hold at least 80% of their original capacity for a high number of charge cycles, this will vary depending on the product. 

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