Asa result, a 20,000mAh power bank can actually charge a 5,000mAh smartphone around 2.66 times before needing a recharge itself. Of course, this figure will vary according to your QualcommQuick Charge (QC): Qualcomm's fast charging standard reduces charging time by many hours. A QC 3.0 charger with a high capacity can fully charge a 3000mAh battery in less than an hour. 15 to 20 minutes of quick charging is enough to keep a smartphone going an entire day. Now let's put everything mentioned together. How many times can a 10000 mAh rated power bank fully charge a 1-year-old iPhone 6 ? Apply the formula: Power Bank capacity * Conversion Rate * Phone Battery health rate / Phone battery capacity = 10000 mAh * 80% * 80% / 1810 mAh =3.75 times. The methodology above is just an approximate evaluation A20,000mAh power bank should be able to charge the smartphone more than six times. The approximate number of charges by dividing the power bank's measured capacity against your phone's stated capacity is as follows: 10,000mAh power bank: 3 charges. 20,000mAh power bank: 6 charges Ze6Akrq.

how many times can a 10000mah power bank charge