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f12_26 | Staff 30.3K Views
May 18, 2026 6:36 PM

LOKITHOR J400 2000A 12V Portable Jump Starter w/ ConnectMax Tech

$33

$80

58% off
+ Free S&Hat Amazon
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Deal Details
Update: This popular deal is still available.

LOKITHOR STORE via Amazon has LOKITHOR J400 2000A 12V Portable Jump Starter w/ ConnectMax Tech (Red) on sale for $59.97 - $26.99 (discount auto applies at checkout) = $32.98. Shipping is free.

Thanks to staff member f12_26 for sharing this deal.
  • Note: Promo code only applies to the Red color option.
About this item:
  • 2000A peak current
  • Designed for gas engines up to 8.0L and diesel engines up to 6.0L
  • ConnectMax system automatically detects clamp connection impedance to the car battery
  • Built with an advanced battery management system (BMS) and smart self-identifying clamps
  • Features 10 safety protections including: spark-proof, reverse polarity, overcharge, overcurrent, short circuit, over-voltage, and temperature protection
  • 3-in-1 design: jump starter, power bank, and 300-lumen LED flashlight (SOS/strobe modes)
  • Smart display screen shows real-time battery status and operation info
  • Fast recharge: 1.5 hours via USB-C (3.0A input)
  • Compact and lightweight (1.5 lbs)

Editor's Notes

Written by Nate650 | Staff
  • Our research indicates that this deal is $14.52 less (30.6% savings) than the next best available price from a reputable merchant with prices starting from $47.50 at the time of this post.
  • 1 year manufacturer warranty
  • Manufacturer product page
  • Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
  • If you're not a student, there's also a free 1-Month Amazon Prime trial available.

Original Post

Written by f12_26 | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Update: This popular deal is still available.

LOKITHOR STORE via Amazon has LOKITHOR J400 2000A 12V Portable Jump Starter w/ ConnectMax Tech (Red) on sale for $59.97 - $26.99 (discount auto applies at checkout) = $32.98. Shipping is free.

Thanks to staff member f12_26 for sharing this deal.
  • Note: Promo code only applies to the Red color option.
About this item:
  • 2000A peak current
  • Designed for gas engines up to 8.0L and diesel engines up to 6.0L
  • ConnectMax system automatically detects clamp connection impedance to the car battery
  • Built with an advanced battery management system (BMS) and smart self-identifying clamps
  • Features 10 safety protections including: spark-proof, reverse polarity, overcharge, overcurrent, short circuit, over-voltage, and temperature protection
  • 3-in-1 design: jump starter, power bank, and 300-lumen LED flashlight (SOS/strobe modes)
  • Smart display screen shows real-time battery status and operation info
  • Fast recharge: 1.5 hours via USB-C (3.0A input)
  • Compact and lightweight (1.5 lbs)

Editor's Notes

Written by Nate650 | Staff
  • Our research indicates that this deal is $14.52 less (30.6% savings) than the next best available price from a reputable merchant with prices starting from $47.50 at the time of this post.
  • 1 year manufacturer warranty
  • Manufacturer product page
  • Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.
  • If you're not a student, there's also a free 1-Month Amazon Prime trial available.

Original Post

Written by f12_26 | Staff

Community Voting

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Why are you downvoting this deal?

Top Comments

Community Reviews

The LOKITHOR J400 is a compact jump starter that stands out for strong starting power and a useful boost mode, with reports of handling deep discharges, dual battery Duramax setups, V6s, and even V8s. The brand also has a long track record of holding up well, and the checkout discount applies as advertised. Caveats include a possible model mix up with the J401, oversized clamps that can be awkward on modern battery terminals, and a voltage readout that runs off. It looks like a handy backup for vehicles, boats, and hybrids when space matters.

Common Questions (5)

  • It has a boost feature that can help with a totally dead battery, but a fully drained battery below about 8V may still defeat many jump packs. This model is described as strong for deep-discharge situations, while some buyers prefer higher-end packs for truly dead batteries.

  • Yes. The checkout discount applies even though it may not look like it will at first, and the final price can match the advertised deal when you reach checkout.

  • It is described as capable of starting a dual-battery Duramax when deeply discharged, and the listing rates it for up to 8L gas and 6L diesel. That makes it a practical option for larger vehicles, though clamp size and battery condition can still matter.

  • The clamps are very large and can be hard to fit on modern battery terminals with accessories attached. The built-in voltage reading has also been reported as off compared with other multimeters.

  • A buyer reported receiving a J401 instead of the listed J400, and noted the unit was much smaller than another Lokithor they owned. The low price made them keep it, but the model mismatch is something to check on arrival.

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53 Comments

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May 26, 2026 12:20 AM
66 Comments
Joined Feb 2024
MerryLinen225May 26, 2026 12:20 AM
66 Comments
Nice.
1
May 26, 2026 4:38 AM
363 Comments
Joined Aug 2025
CalmShoe2276May 26, 2026 4:38 AM
363 Comments
Quote from CleverBook371 View quoted comment :
When Loki and Thor come together your car starts ... lol
Omg Im not the only one that thought this!
May 26, 2026 7:58 AM
16 Comments
Joined Oct 2025
tkoushik77May 26, 2026 7:58 AM
16 Comments
Working great
1
May 26, 2026 10:43 AM
153 Comments
Joined Apr 2017
Slickmonsters2May 26, 2026 10:43 AM
153 Comments
Thanks op
1
Deal Editor
May 26, 2026 2:14 PM
23.9K Comments
Joined Aug 2014
qwikwit
Deal Editor
May 26, 2026 2:14 PM
23.9K Comments
This deal is still available.
May 26, 2026 2:32 PM
1.4K Comments
Joined Jan 2007
noapathyMay 26, 2026 2:32 PM
1.4K Comments
Next store name "looky there"?
May 26, 2026 3:50 PM
34 Comments
Joined Nov 2017
Nick00nick00May 26, 2026 3:50 PM
34 Comments
Looks like a good deal. I do appreciate those that have it posting that they have been happy with it. Got one for myself, one for my life, and one for my parents.

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May 26, 2026 5:01 PM
3.3K Comments
Joined Nov 2011
bigmaceMay 26, 2026 5:01 PM
3.3K Comments
Thanks in for one, now have a jumper box for each car.
May 27, 2026 1:52 AM
32 Comments
Joined Apr 2025
SensibleRain6784May 27, 2026 1:52 AM
32 Comments
Picking one up for the family car.
1
May 27, 2026 10:18 AM
180 Comments
Joined Jan 2010
dmmodMay 27, 2026 10:18 AM
180 Comments
what is the life expectancy for the lithium battery? How about choosing supercapacitor model?
May 27, 2026 11:28 AM
48 Comments
Joined Dec 2016
manjunathbestMay 27, 2026 11:28 AM
48 Comments
Good deal
1
May 27, 2026 12:09 PM
1.2K Comments
Joined Jun 2012
-MoistTowelette-May 27, 2026 12:09 PM
1.2K Comments
I got one on the last deal for the same price. Haven't had to use it yet, but the multimeter feature measuring the voltage is off since I've used another couple of multimeters that show the actual voltage. Also, the clamps are huge and I can barely fit it on the battery in my vehicle. New cars have so many accessories attached directly to the battery terminals that it makes using the clamps challenging.
May 27, 2026 12:30 PM
228 Comments
Joined Nov 2011
jaxroseMay 27, 2026 12:30 PM
228 Comments
Seems like a good deal but some comments are keeping me away
May 27, 2026 1:57 PM
31 Comments
Joined Dec 2019
MaroonLumber464May 27, 2026 1:57 PM
31 Comments

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May 27, 2026 10:08 PM
11 Comments
Joined Oct 2014
Bdogg916May 27, 2026 10:08 PM
11 Comments
I have this one and it works good enough for me

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