If u have no juice u cant bump start it, u need power to power the ecu/ign. and fuel pump. Usen a car batter to jump is fine, once u get it going, go get urself a battery tender, and let it charge her back up to full.
Best way to toast your bike's electrics is to use the alternator to (try to) charge a dead battery. Charge the battery with a low amperage, motorcycle friendly charger. If it will take and hold a charge, great. If not you need a new battery.