RoadReadyCalc

Jump starter size by engine

Quick answer

Buy a jump starter its maker rates for your engine size plus 15 percent: at least 2.9L gas for a 2.5L four-cylinder, 6.6L gas for a 5.7L V8 and 7.7L diesel for a 6.7L diesel.

S ZEVZO ET03 Car Jump Starter 4000A Jump Starter Battery Pack for Up to 8.0L Gas and 7.0L Diesel Engines, 74Wh Portable 12V Jump Box with USB Ports, LCD Display, Storage Case, and LED Light

S ZEVZO ET03 Car Jump Starter 4000A Jump Starter Battery Pack for Up to 8.0L Gas and 7.0L Diesel Engines...

4,000A peak / 8L gas / 7L diesel

Rated by its listing for up to 8.0L gas and 7.0L diesel, which covers most cars and half-ton pickups.

Gas engines

Diesel engines

Jump starters across the range

Prices change often.

Before you rely on this: Researched from published specifications and verified owner reviews, not hands-on testing. General information, not professional advice; check your vehicle manual.