Welcome to our store !!!
We are YooBao Offical Store，In the course of our sales,we found that some customers may not understand the knowledge of the battery,
then gave us a bad evaluation,So I would like to explain in this way: if the battery is 20000mah
Actual capacity =20000mah*(75~85)%(conversion rate of the power bank)*(70~80)%(conversion rate of your phone)