How many peak amps do I actually need to jump-start my car?

For most 4- to 6-cylinder gasoline cars, a 1,000-amp pack like the NOCO GB40 is sufficient. Trucks, SUVs, and small diesels generally want 2,000 amps or more (GB70-class). For 6.0L+ diesels or fleet use, reviewers across the data set recommend stepping up to the GBX155 or GB150 range. Peak-amp marketing claims from budget brands are often inflated, so cross-check against real-world cold-start reports.