Portable Power & Automotive Electronics | Cobra.com Cobra Electronics offers communication devices & automotive electronics for families, fleets, RV & Trucking communities. Join the Cobra Nation! Cobra JumPack portable power gives you the power to jump start your vehicle without assistance. With enough power to jump multiple times, you can even be a hero for another driver. Use CB radios on your daily commute, for off-road adventures, or for long road trips with your family.