Went to fire up the F4 and it seems I have a dead battery. It hasn't been started for a week and the temperature had been into the teens at night (has been garaged, but still cold). Can I use regular jumper cables and jump it with my Civic or my truck?? Or should I invest in a battery tender?? And if I get the tender, will I need to remove the battery or can I charge it while it's still connected to the bike?? Any advice is needed since I need to change the oil and put it up for the winter. Thanks, Drew.