Key locked in trunk 2007 XK Convertible Jaguar

2007 Jaguar XK Convertable

Key locked in trunk

Battery is dead and key is in the trunk. need to know if there is another location ,(possibly under the hood,or somewhere underneath the vehicle), that I can jump start or charge the battery, so that I can access the trunk, and ultimately recharge or replace existing battery,or at the very least, be able to remove it from my garage to have it towed to the dealer.