I purchased a Dell 7390 Latitude battery from Dell. I spoke to a Dell technician on the phone, explained my model and he selected a battery. I paid with my credit card over $60. I was unable to get it installed immediately and when I finally tried it was the wrong battery.After a frustrating time on line trying to get it resolved I had a robo text tell me it was longer than 30 days and I only had 30 days to return the battery.Clearly it was their mistake and, yes I waited too long. But I went to Dell directly because I could depend on quality service. This was not the case. The technician did not know their job, And Dell owes me the correct battery.TRC