Power Bank 20000mAh Mobile Phone External Battery Charger Power-bank

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Ships From: CHINA
Color: Black
Price:
$34.50 $43.99
Stock:
In stock

Description

Brand Name: FLOVEME
Battery Type: Li-polymer Battery
Features: Charger & Battery in 1
Output Interface: Double USB
Battery Capacity: 15600-19999mAh
Charging Devices: for Camera
Charging Devices: for Smartphone
Input Interface: Micro USB
Input Interface: USB Type C
Shell Material: Plastic
Type: Portable Power Bank
Weight: 406g
Size: 135*65*25mm
Support Quick Charge Technology: No
Supports Solar Energy: No
Quality Certification: ce
Quality Certification: ROHS
Quality Certification: FCC
Quality Certification: CCC
Is LED Lamp Illumination: No
Feature: Portable Phone Battery Charger
Feature 1: Battery Power Bank
Feature 2: Powerbank 20000mah
Feature 3: Portable Charger for Phone
Feature 4: External Battery Phone
Feature 5: Portable External Battery
Feature 6: Mobile Power Bank
Feature 7: Battery Pack for Samsung Galaxy S10 S9 S8 Plus
Feature 8: Power Bank for iPhone Xs Max X 8 8 Plus
Feature 9: PowerBank for Xiaomi mi 9 8 se Redmi Note 7 5 pro
SKU: 2019HZR186453_1

Please NOTE :  

Power bank has two regular standards of capacity, one is the battery capacity, one is the rated capacity.  The  20,000mah power bank, being labeled 10000mah/3.7v core capacity be converted to rated capacity 12400mah/5v.

 

Why exist this difference?

 

The most important reason is the conversion rate. Because most of power bank's battery voltage is 3.7V, and power bank needs to increase the voltage to 5V when charging the mobile phone, which makes the power bank's conversion efficiency only 3.75/5=74%, Also include generated heat when battery voltage boosting, and various wire consumption, Electricity, and self-consumption. these points add up to account for 30%-40% of the power of the mobile power source. So the 20,000mAh power bank can really be used by us is about 12400mAh. 

 

Also, The conversion rate of the entire mobile power industry is basically in the range of 60%-70%. Please kindly noted. 

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