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Item specifics
  • Type: Emergency / Portable
  • Quality Certification: CE,CCC
  • Output Interface: Type C,Dual USB
  • Battery Type: Li-polymer Battery
  • Model Number: VSPB304B
  • Brand Name: Vinsic
  • Battery Capacity(mAh): 10001-15000mAh
  • Is LED Lamp Illumination: No
  • Input Interface: USB Type C,Micro USB
  • Output: 5V/2.4A
  • Supports Solar Energy: No
  • Support Quick Charge Technology: No
  • Size: 110*57*15mm
  • Weight: 400g
  • Type: Emergency / Portable
  • Package Weight: 0.4kg
  • Package Size: 110*57*15mm
  • Voltage: Input: 5V Output: 5V
  • Input Interface: Micro USB/AC
  • Output Interface: Double USB
  • Model Number: VSPB304
  • Weight: 400g
Product Description





Capacity: 12000mAh 
USB Port: 2 x Micro USB ,1 x Type-C
Input: 5V, 2.4A (Micro USB)
Input: 5V, 3A (Type-C)
Output1: 5V 2.4A (MAX)
Output2: 5V 2.4A (MAX)
Output3:5V 3A (MAX)
1 x Vinsic® 20000mAh Power Bank 
1 x USB Charging Cable (iPhone cable not included) 
Shipping Method
Power Bank: Netherland Post, Sweden Post, or other Posts with tracking No.
Other Products: China Post Registered Airmail with tracking No. 
Top Sellers: RU/US/EU Local Shipping
Shipping Time  
Dispatch Time: 1-3days after payment process is completed.
Delivery Time: RU US EU countries (10-25 working days)
                        Rest of the world(20-60 days)
Not received after 45 days: Contact us and we will check with our agent
Not received after 60 days: Issue refund 
We are not responsible for any VAT or custom charges.(but we declare low value on the package try to avoid the custom duties)
18 months Product Warranty
Defective in 3 Months: Replacement without extra charges
Defective after 3 Months: Replace or repair, buyers pays the shipping fee for resend or replace product
Please do not open dispute or leave negative feedback without talking to us. We value our customers as well as our feedback profile. If we ignore your message or we can not solve your problem, you can open dispute.

Does your Vinsic 20000mah 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: 20000mAh

Power bank conversion efficiency: 3.7V/5V

Phone inner core conversion efficiency: 80%

The capacity for iPhone6 battery: 1810 mAh

(20000mAh x 3.7/5*80%)/1810=6.5

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

Packaging Details
  • Unit Type: piece
  • Package Weight: 0.4kg (0.88lb.)
  • Package Size: 12cm x 6cm x 3cm (4.72in x 2.36in x 1.18in)
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Packaging Details
  • Unit Type: piece
  • Package Weight: 0.4kg (0.88lb.)
  • Package Size: 12cm x 6cm x 3cm (4.72in x 2.36in x 1.18in)
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