How To

How to use a portable jump starter safely: clamp order, how long to crank, rest between attempts, boost and override modes, and what to do if it fails.

Do lithium jump starters work in cold weather? Operating vs charging temperature limits, how much headroom to buy, where to store the pack, and preheat models.

Peak amps vs cranking amps explained: what each rating means, why peak figures can't be compared across brands, and the spec to use when choosing a jump starter.

What size jump starter do you need? Match the maker's gas or diesel engine rating to your displacement, then size up for cold climates. Tables and examples inside.