It is universal fits for iPhone, iPad, iPod,  for  Samsung devices, HTC phones, tablet PCs, digital cameras, game consoles and MP3/MP4 players, etc   

Vinsic power bank 12000mAh uses Lithium-Polymer battery, I want to know what is difference with other power bank?

The battery of power bank with 2 types: 1.Lithium-Polymer 2.Lithium-Ion(18650)

Lithium-Polymer

Pros: Latest technology, Less warmer, non-flammable, non-explosive, stable and safe, slightly

Cons: Cost is high

Lithium-Ion(18650)

Pros: Easy to get "hot" or simply warmer than expected, flammable and explosive

Cons: smaller in size

Vinsic power bank 12000mah not only uses the Lithium-Polymer battery, but also chooses the best  brand battery in order to make sure our customers’ 100% safety.

Does your Vinsic 12000mah power bank have the real capacity?

Vinsic is well-known brand Power Bank Company, we declare the real capacity for all power bank we sell.

How many times can charger my phone?

Number of charges equals = (Power capacity of Power Bank* battery conversion efficiency* phone inner core conversion efficiency (80%))/ the capacity of mobile phone battery

Take for iPhone 6 for example:

Capacity of Power Bank: 12000mAh

Power bank conversion efficiency: 3.7V/5V

Phone inner core conversion efficiency: 80%

The capacity for iPhone6 battery: 1810 mAh

(12000mAh x 3.7/5*80%)/1810=3.9

So 20000mAh Power bank, the total Number of Charger for iPhone 6 is 4 times.

The capacity of commonly mobile phone batteries

iPhone4S:1470mAh ,for iPhone5: 1440mAh,for iPhone5s: 1560mAh,for iPhone6: 1810mAh,for iPhone6 Plus:2915mAh.

for Samsung GALAXY Note: 2500mAh,for Samsung Galaxy Note: 3000mAh,for Samsung S4/S5:2600mAh

How can I charge this power bank?

We have a charging cable together with power bank; Connect this cable to any USB charger that can charge our power bank.