I have had the 4.4i at my house in NY and it has been sitting since August. I knew the battery was dead and put a charger on the battery(which is new this past July) for about an hour to give it a charge. Then I put a Jump Pack on it to jump it and nothing happens. No clicks, not turning over no nothing. I know the X5 needs quite a bit of juice to crank it but everything is powered up good. Xenons on full bright so there is power. Any idea why the engine is not cranking?
Thanks.

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