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It can last for over 4 months! We recommend power cycling at about the 4 month mark to preserve the life of the battery.
Sorry, there was a problem. Please try again later.It depends on the battery's capacity is on the device you're charging and how many times. A smart phone with a 5,000 mAh battery can be charged about 4 times with this. That's over 46 hours of continuous talk time! Many battery banks like this will have a few examples somewhere in the packaging stating it can charge a tablet twice completely, a Galaxy thingy 4x and an iWhatever 3x until fully depleted.
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