Needing your car only to find out that it has a dead battery is not fun. Unfortunately, it has happened to most of us in the past. A portable jump starter like the Cobra JumPack (CPP 8000) could get you out of trouble though. This is a compact device with 180 amp starting current and 360 amp peak current to jump start most cars multiple times on a single charge.
The device also has a built-in flashlight to help you see in the dark. The 6000 mAh battery can be used to recharge your phone. JumPack is compact enough to fit in your handbag or pocket. The unit holds up to 90% of its charge for up to 8 months. It is available for under $120 at this time.