Power Bank 10000mAh Portable Charging PowerBank 10000 mAh USB PoverBank External Battery Charger For Xiaomi Mi 9 8 iPhone.
The power bank has two regular standards of capacity, one is the battery capacity, one is the rated capacity. The 10000mah power bank, being labeled 10000mah/3.7v core capacity be converted to rated capacity 6500mah/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 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 10,000mAh power bank can really be used by us only about 6500mAh.
Brand Name: kuulaa
Shell Material: Plastic
Charging Devices: for Smartphone
Input Interface: USB Type C
Battery Type: Li-polymer Battery
Features: Digital Display
Battery Capacity: 10000mAh
Size: 14*6.7*1.6cm
Supports Solar Energy: No
Support Quick Charge Technology: No
Output Interface: Double USB
Type: Portable Power Bank
Weight: 222g
Is LED Lamp Illumination: No
Quality Certification: ce
Quality Certification: RoHS
Quality Certification: FCC
Quality Certification: MSDS
Color: Black White
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Compatible Cellphone:: For iPhone Xiaomi mi Huawei Sony HTC LG Samsung Power Bank