Battery of power bank
Usually the standard imported 18650 battery, the battery lifetime about 500 times, the domestic level A brand big card is same lifetime. But the life of the second-line brand is basically between 300-400 times.
Capacity of power bank
The larger the capacity of the mobile power bank, the longer the total life, because the mobile power bank capacity is usually larger, and the longer it is used after being fully charged, the longer the life is naturally.
Circuit board of power bank
Equivalent to the brain, the mobile power supply with high-quality circuit board is more durable, easy to use, and safer. If it is a mobile power source of inferior circuit board, there are many faults, it is easy to damage the mobile phone, and even there is a danger of explosion.
Kingberry speclialized in power bank since 2011, we offer all kinds of power bank to whole market like USA, UK ,Canada,France, Germany , Spain etc. Quality is our culture, we are not on lowest price market , and what we apply, is safe，durable mobile power bank charger.
If you would like to get more power bank charger for gift / Amazon retail/ online retail, please don't hesitate to contact us.