Review title is At first I was very comfortable with the product [SEP] At first I was very comfortable with the product, since the load had lasted a long time, but after it was discharged, I put it to charge for several hours, then I give it 1 hour or more approximately to use it, and it does not last 3 minutes and is downloaded at once, I want to know what I can do since the date of change or refund happened?