About choosing the delivery time for delivery from the Poland warehouse
Tips:Your package may arrive late
Dear AliExpress Member, Products from our are arriving in warehouses later than expected due to the high volume of orders and the current global situation. As a result, your 3-day delivery order will arrive later than the estimated arrival date. If you are willing to wait, please extend the delivery time by about 5 days，Rest assured, your order is on the way so please wait patiently before deciding to request a refund. If you are unsatisfied with the delivery time, we encourage you to contact the our for a refund. Thank you for your understanding.
Note：
1.The Power bank The labeled core capacity is 10000mah/3.7V , the rated capacity is 6500mah/5V.
2.We offer two kind programs for you, you can choose according to your needs.
①：LED PD power bank【Fast Charging】
②：LED power bank【Ordinary 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.
