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LokiThor J400 Review & Demo: Powerfully Compact Jump Starter?

7.1K views· 13 likes· 5:28· Nov 24, 2025

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In compliance with FTC guidelines: All Links On This Channel Are Affiliate Links, Unless Noted Otherwise. LokiThor J400 Jump Starter on Amazon: https://amzn.to/4ohuKdY LokiThor J400 Protective Case Sold Separately: https://amzn.to/3XLI3Zj ** Use this Discount Code for an Extra 20% until 12/1/25, Discount code: HP6TTZZZ ** Today we're taking a look at the LokiThor J400 Jump Starter. We put this car jump starter to the test on a 1982 Ford F100 truck with a dead battery, that is notoriously hard to start. This video provides a thorough jump starter review, demonstrating this portable jump start device in action. I have been impressed it, the only thing i would like to see is that it comes with a case, though one can be purchased separately. Amazon prime 30-Day free trial, just in case you want something here sooner, rather than later: https://amzn.to/3yvxqgI *** Coupon Codes *** **Countycomm.com - 10% off entire order with Coupon Code: SURVIVALGYVER https://countycomm.com/survivalgyver **Augasonfarms.com - 10% off you First Order, use Coupon Code: SURVIVAL-GYVER, With some exceptions (Cannot be combined with other discounts. *60-Meal Kit, Christmas Variety Pail, and Bakers Dozen excluded from this offer.) **RefugeMedical.com - 10% off your order using this special link: https://www.refugemedical.com/Survival-gyver **Atwoodrope.com - 10% off your order with the Coupon Code: SURVIVAL-GYVER https://atwoodrope.com/SURVIVAL-GYVER **Blackbeardfire.com - 10% off your order with the Coupon Code: SURVIVAL-GYVER https://blackbeardfire.com/SURVIVAL-GYVER **Mirasafety.com - 10% off your entire order with the Coupon Code: SURVIVAL-GYVER https://www.mirasafety.com/SURVIVAL-GYVER **Keep Going First Aid - 10% off your order with Coupon Code: SURVIVALGYVER https://www.keepgoingfirstaid.com/SURVIVALGYVER **Battlbox.com - 15% off New Subscriptions Only with Coupon Code: GYVER15 (Limited to one use per customer) https://www.battlbox.com/GYVER15 **HXOutdoors.com - 10% off your order with Coupon Code: SURVIVALGYVER https://www.hxoutdoors.com/?ref=Sgyver **NexTorch.com - 10% off your entire order with Coupon Code: SGYVER https://www.nextorch.com/ Survival-gyver is a participant in several affiliate programs, these affiliate programs help fund the channel, so I can keep bringing you new and exciting gear. Thank you for the support, as I try to make better video's, with better quality, with less ramblings. https://www.amazon.com/shop/survival-gyver https://join.robinhood.com/davidt1077 https://gramrescueranch.org/donate/ https://survivalgyver.substack.com/ https://tubespace.io/survivalgyver https://survival.gyver@gmail.com https://bespokepost.com/r/1004d671

About This Video

In this video I’m taking a close look at the LokiThor J400 jump starter and seeing if it really lives up to the “powerfully compact” claim. I don’t baby-test this stuff—I put it on a real problem vehicle: my 1982 Ford F100 with a dead battery, and that truck is notoriously hard to start. So if a jump pack can handle that scenario, it’s already doing something right in my book. I walk through the jump start process and demo it in action, focusing on what matters in the real world: does it work when you need it, is it easy to use, and is it worth carrying in your rig as part of your emergency kit. Overall, I’ve been impressed with the J400’s performance on the F100 test. My main gripe is simple: I’d like to see it come with a protective case included, because that’s the kind of thing that helps a tool like this survive being tossed in a truck box or gear bin—but at least the case is available separately if you want it.

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