jump start pack is a portable roadside assistance tool which is
designed to provide enough electrical energy to allow a car with
a flat battery to be jump started - without the need for another
car and jumper cables.
Jump start packs usually consist of a sturdy plastic body - which
houses the integrated rechargeable battery, and a pair of thick
leads (positive and negative) which have large crocodile clips at
the end for attaching to the car's battery terminals.
Jump start packs often feature an integrated worklight, which is
handy for jump starting a car at night and making sure you connect
the cable correctly! Some jump start packs also have a built-in
air compressor for inflating tires.
Portable jump start packs can be recharged using any home mains