


Can I bring this power bank on an airplane?
Yes. This 20000mAh power bank is under 100Wh, so it meets TSA carry-on guidelines for portable chargers. Please keep it in your carry-on bag, not checked. luggage.
Why my power bank provide fewer charges than expect?
Usually an external battery could supply 60%-70% power to other devices. About 30-40% of the battery capacity is lost in circuit heat and voltagel conversions.So a fully charged PB11 20000mAh power bank can offer about 14000 mAh to your devices.
How do I fully drain the power bank before first charging?
Simply use the power bank to charge your phone, tablet, or other device until the power bank runs out of battery. After it is fully drained, recharge the power bank completely before regular use.
Why does charging stop at 80%?
Your iPhone may pause charging at 80% due to Battery Health protection, or the charging speed may slow down once the charge reaches 80%. This is to protect your battery from aging.
Does the power bank pass any checks and certifications?
The power bank has multiple protections (Over-Voltage, Over-Current, Over-Power, Short-Circuit, etc.) and has passed ETL, CE, FCC, and UL certifications, ensuring a reliable and durable charging experience. In addition, we offer a 3-year service.



Can I bring this power bank on an airplane?
Yes. This 20000mAh power bank is under 100Wh, so it meets TSA carry-on guidelines for portable chargers. Please keep it in your carry-on bag, not checked. luggage.
Why my power bank provide fewer charges than expect?
Usually an external battery could supply 60%-70% power to other devices. About 30-40% of the battery capacity is lost in circuit heat and voltagel conversions.So a fully charged PB11 20000mAh power bank can offer about 14000 mAh to your devices.
How do I fully drain the power bank before first charging?
Simply use the power bank to charge your phone, tablet, or other device until the power bank runs out of battery. After it is fully drained, recharge the power bank completely before regular use.
Why does charging stop at 80%?
Your iPhone may pause charging at 80% due to Battery Health protection, or the charging speed may slow down once the charge reaches 80%. This is to protect your battery from aging.
Does the power bank pass any checks and certifications?
The power bank has multiple protections (Over-Voltage, Over-Current, Over-Power, Short-Circuit, etc.) and has passed ETL, CE, FCC, and UL certifications, ensuring a reliable and durable charging experience. In addition, we offer a 3-year service.







































