10000mAh Power Bank with LED Display and Dual Fast Charging
$ 25.34
Description
Power Bank 10000mah Portable Charger Led External Battery Two Way Fast Charging FAQ Q: Power bank has two regular standard 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 happening? A: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 10,000mAh power bank can really be used by us only about 6500mAh.
Headphones arrived early and they work in amazing quality! Also arrived with instructions and a charger
thank you its exactly what you said it is shipped fast and received it in perfect shape . thank you
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