This is fact of every powerbank company. But still that power bank is must worst as compared to other in privious power bank I used syska power bank this product is really adorable I really like that but this power bank is wrong choice of my ever. Battery charge time is high but connect to your mobile its very slow to charge. When we connect to keypad type phones useless this power bank I was not recommended for this product I think it's not 10000mah battery it's only 7000mah battery. That's my thinking.