2020 test9 productsJump Starters & Car Power
Which Jump Starters Brand Wins?
A head-to-head test of 9 jump starters options with the measured results for each. See how they ranked and watch the full test video.
Some figures on this page were transcribed from the test video and have not been independently re-verified. Treat the numbers as a close guide and watch the full video for the exact readings.
Budget pick
Gooloo GP2000 and iAmazing (tied)
Price shown in test: $79.99
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The measured results
Every number below is read straight from the test. Scroll sideways to see all measurements. Products are listed in the order they finished.
| Product | Bench test, peak amps and volts | Diesel tractor jump start, Ford 5000 4.2L | Power bank capacity test, 6A discharge | Truck jump start, drained V6 battery | Diesel tractor jump start after overnight freezer cold soak at 0F |
|---|---|---|---|---|---|
| 1Gooloo GP4000$169.99 | 619 amps at 7.6 V, by far the best of all brands tested, lasted about 3 seconds before auto shutoff | very impressive, spun the engine over as fast as a 1,000 amp battery | delivered 67.1 Wh, by far the best of all brands tested, short of its 99.2 Wh rating | not tested | not tested |
| 2NOCO GB70$199.99 | 588 amps, second best of all brands tested, but provided 13 seconds of boost versus 2 to 3 seconds for the other brands, by far the longest boost duration | very impressive, does not spin the engine as fast as some brands but keeps going without giving up | delivered 43.4 Wh, described as definitely not as good as some of the other brands despite its strong cranking performance | spun the engine over by far the longest of all brands tested, very impressive, down to two bars afterward | took a second to warm up then did a great job, definitely fast enough to start the tractor |
| 3Schumacher DSR Pro Series$221 | 559 amps at about 7 V, performed nearly the same as the NOCO, third best of all brands tested | worked at ambient temperature but failed after an overnight freezer cold soak at 0F despite plenty of attempts | delivered 55.2 Wh, second best of all brands tested, behind only the Gooloo GP4000 | very impressive job, really spun the engine over | not tested |
| 4iAmazing$79.99 | 486 amps at 5.6 V, lasted about 3 seconds, slightly below the Gooloo GP2000 despite a higher rated peak amp claim | very impressive, no problem spinning the engine over | delivered 53.8 Wh, better than the Gooloo GP2000 but still well short of its 74 Wh rating | did even better than the Gooloo GP2000, kept the engine cycling for 7 to 8 seconds, down to 86 percent charge afterward | did not like the cold and initially would not work, after warming up did get the engine spinning fairly fast and probably would have started it |
| 5Gooloo GP2000$79.99 | 490 amps at 7.2 V, lasted about 3 seconds before auto shutoff | very impressive job | delivered 45.9 Wh, short of its 73.3 Wh rating | very impressive, spun the engine over very fast, would have started the vehicle with the coil connected, still had charge remaining afterward | performed well once warmed up from an initial temperature of about 4F |
| 6Tacklife KP200$89.99 | 511 amps at 5 V, the best bench result among the brands tested up to that point, lasted almost 4 seconds | very impressive, no problem spinning the diesel engine over | delivered 48 Wh | very impressive, vehicle would have started, down to three bars afterward | needed a few minutes to warm up, then did a really good job |
| 7Viking Compact Power Pack$84.99 | only 410 amps at about 5.8 V, lasted about 2 seconds, weaker than the Gooloo GP2000 and iAmazing, and would not power back on after the test | not tested | delivered only 27 Wh, far short of its 44.4 Wh rating and worse than the two cheaper Gooloo and iAmazing units | failed, host had no luck getting it to work | failed even after about 10 minutes of warm up time, showed a warning light and would not cooperate |
| 8Antigravity Micro-Start XP-1$134.99 | 379 amps at 4.4 V, lasted 3 seconds, described as not up to competing with the far less expensive, larger units | spun the engine over but definitely not as fast as most of the other brands | delivered 27.2 Wh, just barely ahead of the Harbor Freight Viking, second worst of all brands tested | spun the engine over slower than the other brands but did a respectable job for such a compact unit | overheated at first, eventually did a decent job once warmed up though the spin was not very fast, may have started the tractor but probably not |
| 9Autowit$149.99 | only 372 amps at about 3 V, discharged very quickly in about 2 seconds, weakest of the bench tested brands | got the engine to spin over a little bit but not enough to start it | not tested | did a lot better this year than in a previous test, definitely seen some improvements, though it needed a fully charged separate battery to activate since the near dead source battery would have taken about an hour to charge it | not tested |
How it was tested
- bench test on a carbon pile tester for peak cranking amps and volts
- jump start test on a pickup truck with a drained V6 battery
- jump start test on a 4.2 liter diesel tractor
- jump start test on the diesel tractor after an overnight freezer cold soak at 0F
- power bank capacity test under a 6 amp discharge load