ROMOSS Mini Power Bank 10000 mAh External Battery Portable Charger 10000mAh Powerbank For Xiaomi iPhone 12 13 pro max
55.94 35.44 $
80000mAh Portable Solar Power Bank Charging Poverbank Three defenses External Battery Charger Strong LED Light Double USB
Stand alone switch, start charging
How to use LED mobile phone:
1. Double click the switch quickly to turn on the LED light
2. Click Fast Close again to change the brightness frequency
3. Double click the switch quickly to turn off the LED light
Product name: Power Bank
Usable capacity: 8000-10000mAh
Material: plastic ABS +TPU
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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Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.
Yes. We provide free shipping to over 200 countries around the world. However, there are some location we are unable to ship to. If you happen to be located in one of those countries we will contact you.
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Shipping time varies by location. These are our estimates:
|Location||*Estimated Shipping Time|
|United States||10-30 Business days|
|Canada, Europe||10-30 Business days|
|Australia, New Zealand||10-30 Business days|
|Central & South America||15-30 Business days|
Yes, you will receive an email once your order ships that contains your tracking information.
For some shipping companies, it takes 2-5 business days for the tracking information to update on the system.
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