Benefits of a car battery jump pack
You probably keep jumper cables in your vehicle so you can solicit a jump if your car battery dies or offer a jump to a fellow driver. But jumping batteries on cars built after 2000 might not be so smart. Newer vehicles can contain dozens of computers and even more digital devices. Jump-starting a car with cables connected to a running vehicle can create a voltage spike of up to 15.5 volts and fry expensive computers in both vehicles involved. Most of these components communicate on a shared data bus, so surge damage to just one computer or digital device (even a radio) can disable the entire data bus, preventing the vehicle from starting and costing hundreds to diagnose and repair.
Jump-starting with a jumper pack (also called a jump starter, booster pack, or a juice pack) is a better alternative. The battery inside the jumper pack boosts the dead battery at a safe voltage. When used properly, a jumper pack is the safest way to protect the electronics in the dead vehicle while providing enough boost to get the engine running.
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