A friend of ours carries one of these with her company vehicle and has gotten herself out of numerous bad situations. We, on the other hand, didn’t take the hint when she mentioned it to us and found ourselves stranded briefly last week when a brake light stuck on in one of our vehicles and killed the battery. We’re going to remedy the situation this week and pick up a Jump-N-Carry or equivalent.
The model pictured here — the Jump-N-Carry JNCair contains a sealed lead acid (SLA) battery and an integrated charger. Charge it every so often and keep it in your car, and you can jump start yourself whenever needed without the assistance of another vehicle. This particular model also has a built-in air compressor that also runs off the SLA, so you can air that semi-flat up to get it over to the repair shop.
There are lots of similar devices out there, as you can clearly see from the Froogle link below, but expect to pay between $100 and $200 for a decent unit. It might seem like a lot, but it beats being stranded hands down.