Jump Starter 2025 Test: Which Brand Wins?

turned over the engine the fastest yet at that point in testing; ran for 13 seconds, tied for second place (rating 1.5) with the Wolfbox

lasted over 10 seconds; tied for second place (rating 1.5) with the Gooloo

made the test look way too easy; ended just over 11 seconds, by far the best result up to that point

gave up really early at just over 2 seconds, a poor result for the most expensive unit tested

no explicit duration is narrated for this brand in this test; the transcript only debunks its cranking-amp claim ('Definitely not 7,000 cranking amps') without stating a measured time, unlike every other brand in this section

needed an external jumper to excite it first; did the best result up to that point, though not the advertised 8,000 cranking amps

got too excited at the start and produced heavy smoke on the first attempt; the second attempt lasted just over 6 seconds before the unit overheated

has a boost button allowing it to work with a completely dead battery with no external excite needed; performed the best yet at that point with a 3 second run on the first attempt

needed help from an extra jumper to start; barely able to turn over the V6 engine

would not work with a completely drained battery without an external excite jumper; made three attempts, struggled each time, then overheated

the dead battery was way too much for it; not enough cranking amps to spin the engine

would not work with a completely dead battery without an external excite jumper; only lasted about a second even after being excited

did not produce enough current to spin over the engine at all, a complete failure on the very first test

by far the heaviest of the mid-priced brands at the point it was introduced

for the jump starter alone; 9.25 lb including the battery, by far the heaviest unit tested

just about a pound

seemed even better than the Yaber Auto for cranking amps; all three back to back attempts successful

just as motivated as the Gooloo; successful on all three attempts

as powerful as a brand new car battery; started very easily on all three attempts

the super capacitor packed plenty of punch for a small block V8; successful on all three attempts

really struggled with the completely dead battery earlier in the Ford Ranger test, but the partially charged battery helped this time; exact number of successful attempts on the 350 is not explicitly stated

started the engine on the first, second, and third attempts, described as 'quite a bit better than the previous brands'

two successful attempts, then gave up after the second attempt with an overheating error

seemed quite a bit better than the KoolGoo (Cold Go) and made very easy work of the engine on all three attempts

made pretty easy work of starting the engine in all three back to back attempts

struggled at first but performed quite a bit better this time; three successful attempts, then overheated afterward

almost started the truck on the first attempt but could not start it on the second or third before the unit overheated

performed well and started the engine on all three attempts

of cranking time at high RPM; tied for second place (rating 1.5) with Wolfbox and Yaber Auto

turned the engine as well as a fully charged car battery, lasting just over 10 seconds; tied for second place (rating 1.5) with Gooloo and Yaber Auto

by far the best result to that point, notable for a unit that also has a built-in air compressor

started off strong but quickly faded, lasting a total of just over 3.5 seconds

performed well but not as well as the Yaber Auto, lasting around 5.5 seconds

performed the best yet at that point, lasting just over 7 seconds

not spinning as fast as the Gooloo but performed better than average, lasting almost 10 seconds

performed about the same as the Yesman (YUSMAN) both here and in the earlier Ford Ranger test, lasting just over 6 seconds

gave up pretty quickly at just over 2 seconds

did better than the Sharmeal and WNDFLV but still a disappointing performance; no specific duration given

way too much for this unit, same as the Sharmeal; no specific duration given

way too much for this unit; no specific duration given, described only as a failure

performed well throughout the showdown but its safety features triggered an overcurrent fault; failed to start the diesel engine on repeated attempts

built-in safety design prevented it from delivering full potential; three attempts all ended with a fault code, did not start the diesel engine

performed much better than most brands and started the diesel engine three times back to back; one of only three brands to do so

did not produce enough cranking amps to start the diesel engine

made one successful start, described as 'one and done', did not repeat successfully

failed to start the diesel engine ('said no')

one of the three brands able to start the diesel engine three times in a row, despite not seeming as powerful as the Gooloo

threw in the towel quickly, did not start the diesel engine

produced nothing but a couple of clicking sounds, did not start the diesel engine

the reviewer states this brand will be retested on the diesel engine along with Sharmeal and WNDFLV since they underperformed on the previous test, but no explicit diesel-test result for this brand is narrated anywhere afterward; likely a caption/narration gap

the reviewer states this brand will be retested on the diesel engine along with Sharmeal and Dekoni since they underperformed on the previous test, but no explicit diesel-test result for this brand is narrated anywhere afterward; likely a caption/narration gap

the reviewer states this brand will be retested on the diesel engine along with Winfliv and Dekoni since they underperformed on the previous test, but no explicit diesel-test result for this brand is narrated anywhere afterward; likely a caption/narration gap

too wide for the light-brightness tester, worked out to around 91 lumens

light too large for the integrating-sphere tester; estimated at about 45 lumens using basic math

the brightest light of any brand tested

second brightest of any brand tested

the dimmest of any brand tested

second dimmest of any brand tested

(better than advertised), 80.43 watt hours total capacity, the highest of any brand tested

66.22 watt hours total capacity, third highest

the highest of any brand tested; total capacity of 59.85 watt hours (does not place in the top three for total capacity)

not tested; the Milwaukee is a super capacitor unit and was not included in the watt-hour capacity or peak-watt sections of the transcript

47.89 watt hours total capacity, second place at that point in the ranking narration

(best yet at that point), 27.75 watt hours total capacity, briefly the leader

before collapsing, 48.99 watt hours total capacity

26.49 watt hours total capacity, trailing the Yesman (YUSMAN) and KoolGoo (Cold Go) slightly

before shutting down, 27 watt hours total capacity, about the same as the Yesman

rated for 10 watts and produced right at that; 16.78 watt hours total capacity

19.79 watt hours total capacity

of output, completely drained after 5 hours 38 minutes at only 10.23 watt hours, the lowest capacity of any brand tested

at 8.13 volts for 5,049 watts, third highest

at 9.28 volts for 5,679 watts, second highest of any brand tested

at 6.91 volts for 4,637 watts

at 7.13 volts; the wattage total is not spoken in the transcript (the sentence is cut off), but 503 x 7.13 works out to approximately 3,587 watts by direct calculation from the stated amps and volts, not an invented figure

at 7.04 volts for 4,555 watts

at 6.91 volts for 3,510 watts

the unit was fried and no longer working properly by this point in testing, no bench-test figures obtained

at 7.23 volts for 3,890 watts

at 6.47 volts for 2,970 watts; the jumper cable melted during this test

at 6.22 volts for 2,295 watts

at 7.31 volts for 1,301 watts, the lowest cranking-amp result of any brand tested

at 6 volts for 2,130 watts