My cell phone was having to be recharged several times a day,so I knew it was almost used up . I was told by the local company that batteries for my phone were no longer available. I was excited when I found that you did have them in stock and now the ordered one is working fine. I have only had it installed for 3 days, but it hasn't been recharged after the initial charge,and still shows 2 of the 3 lines of power left. I also appreciated the fast and courteous service.