Project Farm has put portable jump starters through repeat cold-cranking and capacity tests. Here is every one of those matchups on the index, ranked exactly the way the test finished, with a link to our full write-up and to the original video.
The tests measure real starting performance rather than advertised peak-amp numbers: how many consecutive starts each pack delivers, cranking amps under load, how a dead or low battery responds, build quality, and included features. Rankings below follow the order each unit finished in the test.
How often each brand took the top spot across these tests.
Each block shows how the test finished. Open our write-up for the full measured table, or watch the original video.
+ 6 more in the full measured results
+ 5 more in the full measured results
+ 6 more in the full measured results
+ 2 more in the full measured results
+ 2 more in the full measured results
+ 1 more in the full measured results