2022 test10 productsJump Starters & Car Power
Which Jump Starter Brand Wins?
A head-to-head test of 10 jump starter options with the measured results for each. See how they ranked and watch the full test video.
Budget pick
Yesper YJS 40
Price shown in test: $90
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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 | Claimed specs | Made in | Weight | Small block V8 (5.3L) start, dead battery | Bench test, carbon pile tester | Big block V8 (7.4L, 454) start, dead battery | Diesel (5.9L Cummins) start, dead battery, unassisted | Cold soak test, 0 F for 12 hours, 5.3L V8 | Power bank capacity, 7 amp load test | Diesel (5.9L Cummins) start, dead battery, assisted | Diesel (5.9L Cummins) start, dead battery |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1NOCO Boost X GBX155$339 | 4,250 peak amps claimed, 99 watt hour lithium battery, two USB ports and a USB-C, comes with a carrying bag, a 12 V adapter, and a USB cable | Vietnam | 2,545 g, the heaviest unit tested | needed the boost button to override activation on the completely dead battery, then doing by far the best of all units so far | 896 amps at 7.5 V, equals 6,720 W, the highest wattage of all units tested, about 1,200 W better than the second place finisher | delivers more than twice as many cranking amps compared to some of the other brands, presenter says it is ready for a much bigger challenge than this test vehicle | by far the most powerful jump starter in the lineup at over 6,700 W on this test, made very easy work of the diesel in all three back to back starts with no hesitation | spinning over the engine the fastest of all the brands tested | delivered 78.4 W hours, second place behind the Yesper Armor Pro 2 | not tested | not tested |
| 2Lokithor$170 | starting current 1,500 amps, peak current 2,500 amps claimed; also functions as a 20,000 mA hour power bank with 60 W two way fast charge; claims to start an 8.5 L gasoline engine and a 6.5 L diesel; has a voltmeter and a boost button on the unit; comes in the box with no separate storage case | China | 1,072 g | rated at 2,500 peak amps but performs just as well as the Yesper YJS 40 | 773 amps at 7.2 V, equals 5,566 W, the best result of all units tested up to that point | made very easy work of the truck on all three attempts, presenter says it is ready for an even bigger challenge than this 454 | delivers more than enough cranking amps to start the diesel without any help, two for two on unassisted diesel starts by this point in the video | only lasted 1.5 seconds before powering down from being too cold, did not start the engine | 57.2 W hours, about 23 percent less than advertised | not tested | not tested |
| 3Avapow$170 | 6,000 amp claimed jump starter, claims to start all gasoline and diesel engines, ultra bright LED light, type C, two USBs, and a DC output | China | 1,240 g | jump starter mode would not activate on the completely drained battery and there is no boost button or override; presenter used a separate battery charger to trick the unit into activating, and once activated it only lasted two and a half seconds before powering down and sounding its alarm | claims 6,000 peak amps but came up way short at 649 amps at 7.4 V, equals 4,803 W | would not activate using the boost button; presenter had to use another jump starter to activate the unit, and with that help it made very easy work of starting the truck | not tested | only lasted 1.3 seconds before powering down, did not start the engine | 63 W hours, about 47 percent less than advertised | would not power up on the completely dead battery; presenter used a much smaller jump starter to activate it, calling it not a fair test, and with that help the Avapow was able to start the truck | not tested |
| 4Gooloo GT4000S$200 | starting current 800 amps, peak current 4,000 amps claimed, 26,800 mA hour battery, up to 100 W charging speed, claims full charge in only 1.2 hours, DC out, two USB outs, and a USB-C, instructions printed on the side of the unit | China | 1,051 g | boost button works properly, delivers more than enough cranking amps to start a small block V8 | 678 amps at 6.6 V, equals 4,475 W, took third place from the Autogen at that point | performed well on the bench test at almost 4,500 W, delivered more than enough cranking amps to start the truck three times back to back | not tested | performed very well, more than enough cold cranking amps | claims a 99.1 W hour capacity but came up 30 percent short at 69.2 W hours | not tested | performed close to the Autogen on the tester at around 4,500 W, was not able to start the diesel engine |
| 5Autogen$180 | 4,500 peak amps claimed, 32,000 mA hour capacity claimed, 12 V 10 amp output, operating temperature rated down to negative 4 degrees Fahrenheit, port for charging the unit plus two USB outs | China | 899 g | has a boost button, like the Yesper, that has to be used to activate the jump starter on a completely drained battery; spinning over very quickly with more than enough cranking amps to start the engine | 691 amps at 6.4 V, equals 4,422 W, moved into third place at that point | performed very well on the bench test at over 4,400 W, made very easy work of firing up the truck on all three attempts | not tested | performed very well without any issues | 70.7 W hours, performed about the same as the standard Yesper YJS 40 | not tested | delivered over 4,400 W on the tester but did not deliver enough cranking amps to start the diesel |
| 6Yesper YJS 40$90 | 4,120 peak amps claimed, 24,000 mA hour battery capacity, LED light, USB-C, and two USBs, DC output makes up to 10 amps, has a boost button so the user can choose when to activate the unit | China | 820 g | claims 4,120 peak amps and is doing the best so far at this point in the video, plenty of cranking amps even for an engine that might take a while to fire up | 515 amps at 6.8 V, equals 3,502 W, enough to take the lead from the Povasee at that point | made very easy work of jump starting the truck on all three back to back attempts, presenter notes not bad for a $90 jump starter | not tested | spinning over the engine a lot faster than the Povasee at this point | claims 88.8 W hours, came up 20 percent short at 71 W hours | not tested | narration first recaps it making very easy work of the 454 test and around 4,500 W on the test stand, then says other than a clicking sound there is not much action on two different diesel start attempts; the video's closing summary confirms only the Lokithor and NOCO started the diesel unassisted, so this unit is treated as a diesel failure, though the stated 4,500 W figure here does not match this unit's own 3,502 W bench result and may belong to a different brand's number bleeding into this sentence |
| 7Povasee$90 | 3,000 peak amps claimed, rated to work down to negative 22 degrees Fahrenheit, 23,800 mA hour battery capacity, DC out, two USBs, and a USB-C outlet, claims to start all gasoline engines and up to an 8 L diesel | China | 542 g, the lightest unit tested | spinning the engine over even faster than the Foxpeed, plenty of cranking amps to start the engine | 558 amps at 6 V, equals 3,348 W, about 150 W better than the BRPOM at that point | did better than the Foxpeed on the bench test at over 3,300 W, made very easy work of starting the truck on the first attempt and did well on two more attempts | not tested | spinning over the engine a little faster than the Foxpeed at this point | claims 88 W hours, struggled on this test at 44.1 W hours, about half the advertised capacity | not tested | narration is contradictory here, one sentence says it made plenty of cranking amps for the truck, the next says it is way over its head trying to start a diesel; since the video's closing summary only credits the Lokithor and NOCO with an unassisted diesel start, this is treated as a diesel failure, but the contradiction is flagged rather than silently resolved |
| 8BRPOM$70 | 3,000 peak amps claimed even at negative 20 degrees Celsius, claims to start a 10 L gasoline engine or an 8 L diesel, 23,800 mA hour battery, bright LED flashlight, two USB outputs, and type C fast recharging | China | 605 g | makes more than enough power to spin the small block eight cylinder pretty fast for about 10 seconds, more than enough cranking amps to start the engine | ran out of steam at 517 amps at 6 V, just over 3,100 W | did not have any luck on the first two attempts and struck out after three attempts total, did not start the truck | not tested | started the engine after the 30 minute warm up period | claims 23,800 mA hours, around 88.1 W hours, came up 47 percent short at only 46.1 W hours | not tested | could not start the diesel, not so much as a burp or a click |
| 9Yesper Armor Pro 2$200 | claims by far the largest capacity at over 83,000 mA hours, peak current 3,000 amps claimed, can charge from 0 to 100 percent in only 3 hours, works in temperatures down to negative 40 degrees Fahrenheit, box doubles as a storage case, instructions printed on the side of the unit | China | 2,387 g, by far the heaviest unit tested | at 100 percent charge, plenty of cranking amps to start the engine | rated at 3,000 peak amps, ran out of steam at 510 amps at 5.8 V, equals 2,958 W, pretty low compared to most of the other brands | made very easy work of jump starting the truck on the first attempt, but it is one and done, could not repeat the start on further attempts | not tested | performed good enough to start the engine but did not spin it over nearly as fast as the less expensive Yesper YJS 40 | claims a 299.5 W hour capacity, came up 26 percent short at 220.5 W hours, still the highest actual capacity of any unit tested | not tested | only produced about 3,000 W on the tester and did not make nearly enough cranking amps to start the diesel |
| 10Foxpeed$70 | rated for 2,500 amps and 21,000 mA hours, claims to start an 8 L gas or 6.5 L diesel engine, USB in and out and a DC output, two USB outlets and an LED light | China | 608 g | spinning the engine over a little faster than the BRPOM, plenty of juice to last 10 seconds and more than enough power to start the engine, down to 93 percent charge afterward | 439 amps at 6.2 V, equals 2,722 W, almost 400 W less than the BRPOM, the lowest bench wattage of all units tested | claims 2,500 peak amps and delivered just enough cranking amps to get the truck going | not tested | performed well and lasted long enough to start the engine | claims to make 77.7 W, came up 42 percent short of its rating at 44.9 W hours | not tested | needed way too much juice for the diesel, no luck on a second attempt either, did not start the engine |
How it was tested
- small block V8 (5.3L) jump start on a completely dead battery
- carbon pile bench test measuring amps and volts, watts calculated
- big block V8 (7.4L, 454 cid) jump start on a completely dead battery, three attempts each
- 5.9L Cummins diesel jump start on completely dead batteries
- cold soak test at 0 F for 12 hours, then 30 minute warm up, then 5.3L V8 jump start
- power bank capacity test using a 7 amp load, actual versus claimed watt hours
- weight comparison