This the jump pack AAA uses.
There’s an on/off switch so when connecting to the battery, a spark isn’t created.
Schumacher DSR ProSeries 2200 Peak Amps Jump Starter and Portable Power Unit
The Schumacher DSR ProSeries 2200 Peak Amps Jump Starter portable power unit is one of Amazon’s bestselling jump starters, commonly recommended by professionals, used in professional auto shops, and is even used by AAA representatives when you need a jump. It has 2200 peak amps, 330 cranking amps, and 275 cold cranking amps. It also has a three-amp built-in automatic charger, reverse hook-up alarm, heavy duty clamp with replaceable copper jaws, four-gauge 50 inch cables, high impact rubber base, and a durable polypropylene vented case. It’s sturdy, safe, and easy to use. Along with serving as a backup jump starter, it can also power 12V DC accessories. If you charge the professional grade, high output battery once you receive it, it can hold the charge until you need it.
Most reviewers agree that this durable jump starter will last for years, even if you use it multiple times throughout the year. It can jump several cars multiple times with no problem. If this doesn’t provide the amount of power you need, Schumacher offers jump starters ranging from 1800-4400 Peak Amps. Both the Schumacher PSJ-2212 DSR ProSeries 2200 Peak Amps Jump Starter and Portable Power Unit and the Schumacher XP2260 1200 Peak Amp Instant Portable Power Source were voted some of the best jump starter kits of 2015, so you are sure to love either of these bestsellers.