Keep in mind that jump-starting it will not sufficiently charge it, it will only get it started. Charging it with the proper charging mechanism (battery charger) is the only way to sufficiently charge it. Jump-starting it and just driving it will not allow your battery to fully charge back up which may shorten your battery life and also make your alternator work. These X's don't have the best alternators on them to begin with. Mine went out at 59K.

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2010 Lexus RX350 still new
2003 BMW X5 3.0i w/sport package w/68K miles. (gone Thank God!)
2002 Dodge Ram 2500 4X4 cummins diesel w/198K miles, custom repo truck
2009 Scion tC w/46K miles
2007 Suzuki SV650 custom streetfighter
2000 Lexus GS400 w/165K miles