for Samsung Galaxy S22 Ultra S22 Plus S22 5G Case, External Battery Charger Case Portable Power Bank Shockproof Charging Cover

$65.99$85.79Save 23%

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Collections: Phone Cases, Samsung Galaxy Phone Cases , Accessories

Product description
Product parameters:
Input current: 5V 1800mA
Output current: 5V 1500mA
Working temperature: 0 ℃ -45 ℃
Storage / transport temperature: -20 ℃ ± 50 ℃
For Samsung Galaxy S22
Cell capacity: 4700mAh
Rated capacity: about 2350-3120mAh
Charging time: ~ 5 hours
Product net weight: 134g
For Samsung Galaxy S21 Plus
Cell capacity: 4800mAh
Rated capacity: about 2550-3200mAh
Charging time: ~ 5 hours
Product net weight: 146g
For Samsung Galaxy S22 Ultra
Cell capacity: 4800mAh
Rated capacity: about 2550-3200mAh
Charging time: ~ 5 hours
Product net weight: 150g

NOTE:

Portable Battery charger case has two regular standard of capacity , one is the battery capacity, one is the rated capacity. 

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 making the power bank's conversion efficiency only 3.75/5=74%, Also include generated heat when battery voltage boosting, and various of 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 5,000mAh power bank can really be used by us only about 3000-4000mAh.

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

Please search on Google if want to know the details!

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