How to judge a power pack

Generally a mobile power bank pack can be judged in three aspects:
  

1, the electric core: there are currently two kinds of electric core for mobile power bank pack on the market, one is aggregated electric core which batteries is the best electric core on the market, in general, relatively thin mobile power bank adopt this power core, prices are accordingly higher than other mobile power bank with the same capacity, the other is 18650 cylindrical electric core, the mobile power bank pack with the electric core is relatively thick, it is cheaper than others, the electric core aggregated have longer lifespan and higher energy conversion rate than 18650 cylindrical electric core !

2, capacity: there are tons of virtual mobile power bank pack on the market itself without so high-capacity because manufacturers deliberately seek profit,but that’s can be identified as long as make sure that the mobile power bank with the same capacity volume and electric core are generally the same (this is just like the relationship between the bucket and water)

3, other configurations:mobile power bank is equipped with data lines, those with better configuration does relatively not only have a few different models of data cable but have charger to charge the mobile power bank pack!
For more information about power pack,please visit http://www.onu-mall.com/catalog/backup-battery-case/power-bank/
Article from http://blog.onu-mall.com/index.php/2015/10/08/how-to-judge-a-mobile-power-pack/