Replaced battery with new one. H 2 been sitting idle for about 1 week. New battery dead & will not start vehicle,. Has this happened to anyone or can someone suggest what problem is. Thanks

 

Do you know how to perform a parasitic draw test, or are you looking for suggestions on which parts to throw at it? Let me know, since it's not costing someone's suggestions anything. I can give you a list of things to replace, yet I need to know how much you have to spend?

 

No knowing any other details of other issues that may have started just before the dead new battery..... a New Battery (12V Auto Battery) is rarely fully charged off the shelf. They need to be charged at the time of installation. They are like milk cartons, the old ones at the front of the shelf been sitting for possibly months.