Which portable charger is suitable for me

1.Mobile device/devices
Determine the kind of mobile device you would like to charge with the portable charger and the number of devices you wish to charge. (eg. iPhone 5, iPad, Samsung Galaxy S4, Samsung Note 3, etc.)
2. Battery capacity (mAh) and input requirement (A)
Check out the battery capacity (mAh) of each mobile device you wish to charge with dual usb portable charger and also the voltage input requirement (1A/2A/2.1A). Calculate and add up the total power needed to charge up your devices. Determine your usage for each individual device and add it to the total power needed.
Battery capacity:
iPhone 5 – 1440 mAh
iPhone 5s – 1560 mAh
iPad 4 – 10,000 mAh
Samsung Galaxy S3 – 2100 mAh
Samsung Galaxy S4 – 2600 mAh
Samsung Galaxy Note 3 – 3200 mAh
For multiple charging of mobile devices, it would be recommended to choose portable charger  with both ports 1A and 2/2.1A.
3. Power bank
After totalling up the power needed to charge up your mobile devices, now look that the portable charger that caters to your needs. At the back of most packaging, it states that there will be a successful transfer rate of 85%, where the other 15% would be lost to discharge and heat.portable charger wholesale portable charger factory portable charger manufacturer portable charger supplier portable charger card reader data cable charger car charger balance scooter portable charger kingree portable charger pineng portable charger perkin portable charger exmight portable charger arun portable charger aixun portable charger