I also bought this sony power bank 10000 mAh. I m sad due to purchase a this power bank.It's not giving a full energy to mobile.Actually it is consume a more power for charging but not giving full energy or power or charged to cellphone. Some time at the time of charging its convert from cool to hot. It's energy are quickly end with charging. And it is very heavy.I am not satisfied from using this power bank. I attach a photo of my power bank.