well we all know that these cars are very sensitive to low voltage issue . I am starting to have issues related to low voltage and it appears my battery is at the end of its life. so question I know there are lots of variables , like heat , age , usage , etc but My AGM battery ( name brand ) is just now 3 years old and I was thinking I would have gotten 4 to 5 years out of a AGM . I am use to getting 3 years out of lead acid here in AZ where its hot. what are other seeing with the range rover ?