First off I am new with cell phone so my son gave me one. BTW I am 70 years old. Here is my question the battery after full charge with just turn on with no service it stay turn on for about 13 hours. This is the battery I want to get but what do you think? https://www.ebay.com/itm/High-Capac...1cd88ef2b:m:m5p7fM41y4MQiUusnjkh6Tw:rk:4:pf:0