How many times can a 1800mah power bank charge an iPhone 6s? If only one, will it give a full charge?

How many times can a 1800mah power bank charge an iPhone 6s? If only one, will it give a full charge?

Only once. The battery in an iPhone 6s is 1715 mAh, so it should be a full charge.

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Considering that the battery for the iPhone 6s is 1715 mAh (less any applicable wear), you will generally get a full charge with a sliver of power (~85 mAh) remaining with a 1800 mAh bank (less any wear on it).

Please be aware that with ALL rechargeable batteries, the storage capacity does slowly decrease with usage (as well as lengthy inactivity) & batteries can typically handle around 500 to 1000 "full charge" cycles (1 cycle is going from 100% down to 0% & back. To simply things, each 2% change in battery power in either direction costs 0.01 cycles) before it's considered "worn" (losing around 20% of it original capacity at that point). If you recharge on a daily basis, you will generally hit the "worn" mark in about 2 years & "replacement required" in about 4 years (after 1,000 - 2,000 cycles as the battery would only retain around 60% of it's original capacity).

As a result, the exact numbers will vary, but the average on 1 full charge remains true.

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