Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.
popularDesertGardener | Staff posted Apr 14, 2026 12:25 AM
popularDesertGardener | Staff posted Apr 14, 2026 12:25 AM

LOKITHOR J2250 PRO 2250A 12V LiFePO4 Jump Starter w/ ConnectMax $69.97 + Free Shipping

$70

$140

50% off
Amazon
12 Comments 5,909 Views
Get Deal at Amazon
Good Deal
Save
Share
Deal Details
LOKITHOR Online via Amazon [amazon.com] has LOKITHOR J2250 PRO 2250A 12V LiFePO4 Jump Starter w/ ConnectMax for $139.95 - 50% off when you apply promo code 7KYLEUYU at checkout = $69.97. Shipping is free.

About this item:
  • 2250A Peak starts 8.0L gas or 6.0L diesel engines even in extreme temperatures ranging from -4°F to 140°F.
  • LiFePO4 Battery offers a safer, longer lifespan of more than 2000 cycles at 100% / 8000 cycles at 50% depth of discharge.
  • 60W Two-way fast charging with USB-C. Additional USB-A 18W output. Fully charges in 1 hour.
  • 300 Lumen LED flashlight with 6 modes: 100%, 50%, 10%, SOS, blink, strobe.
  • ConnectMAX Technology automatically detects the connection impedance between the clamps and the car battery, ensuring optimal connections every time and maximizing the jump starter's performance.
  • Equipped with 10 safety protection mechanisms including; overcharge, overcurrent, short circuit, reverse polarity, low temperature, high temperature, overvoltage, overload, anti-spark, and reverse charging protection.
  • Up to 36-month standby.
  • IP65-rated waterproof and dustproof.
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
LOKITHOR Online via Amazon [amazon.com] has LOKITHOR J2250 PRO 2250A 12V LiFePO4 Jump Starter w/ ConnectMax for $139.95 - 50% off when you apply promo code 7KYLEUYU at checkout = $69.97. Shipping is free.

About this item:
  • 2250A Peak starts 8.0L gas or 6.0L diesel engines even in extreme temperatures ranging from -4°F to 140°F.
  • LiFePO4 Battery offers a safer, longer lifespan of more than 2000 cycles at 100% / 8000 cycles at 50% depth of discharge.
  • 60W Two-way fast charging with USB-C. Additional USB-A 18W output. Fully charges in 1 hour.
  • 300 Lumen LED flashlight with 6 modes: 100%, 50%, 10%, SOS, blink, strobe.
  • ConnectMAX Technology automatically detects the connection impedance between the clamps and the car battery, ensuring optimal connections every time and maximizing the jump starter's performance.
  • Equipped with 10 safety protection mechanisms including; overcharge, overcurrent, short circuit, reverse polarity, low temperature, high temperature, overvoltage, overload, anti-spark, and reverse charging protection.
  • Up to 36-month standby.
  • IP65-rated waterproof and dustproof.

Community Voting

Deal Score
+11
Good Deal
Get Deal at Amazon

Leave a Comment

Unregistered (You)

12 Comments

Sign up for a Slickdeals account to remove this ad.

Apr 14, 2026 12:57 AM
616 Posts
Joined Jun 2012
-MoistTowelette-Apr 14, 2026 12:57 AM
616 Posts
When I apply the code, the amount comes to $97.96, which is 30% off not 50%. I'm not seeing $69.97.
Apr 14, 2026 01:26 AM
384 Posts
Joined Feb 2011
fo4imtippinApr 14, 2026 01:26 AM
384 Posts
worked for me! needed a bigger lifepo4 one for my RV.
Apr 14, 2026 03:24 AM
1,108 Posts
Joined Nov 2007
5thgenApr 14, 2026 03:24 AM
1,108 Posts
Terrible reviews
1
2
Pro
Global Mod
Apr 14, 2026 12:50 PM
3,757 Posts
Joined May 2008
pur
Pro
Global Mod
Apr 14, 2026 12:50 PM
3,757 Posts
Quote from -MoistTowelette- :
When I apply the code, the amount comes to $97.96, which is 30% off not 50%. I'm not seeing $69.97.
There is 30% promo that doesn't need a code, so it sounds like 7KYLEUYU wasn't added. If you're using the Amazon app you might be missing the step of tapping on the arrow that appears in the promo code box to apply the code (before tapping the Continue button).
Apr 14, 2026 01:40 PM
616 Posts
Joined Jun 2012
-MoistTowelette-Apr 14, 2026 01:40 PM
616 Posts
Quote from pur :
There is 30% promo that doesn't need a code, so it sounds like 7KYLEUYU wasn't added. If you're using the Amazon app you might be missing the step of tapping on the arrow that appears in the promo code box to apply the code (before tapping the Continue button).
Thanks, you're right, I was able to apply it correctly. I ended up getting the Lokithor J400 on sale for $32 instead though. The fact that the J400 is UL listed among other specs and better reviews made it a better sale for me. The fact that it's cheaper doesn't hurt either, even though though the J400 is lithium polymer. Maybe over time the LiFePO4 starters will be more widely used and UL listed.
Apr 14, 2026 02:08 PM
2,797 Posts
Joined Jun 2014
rczriderApr 14, 2026 02:08 PM
2,797 Posts
Quote from -MoistTowelette- :
Thanks, you're right, I was able to apply it correctly. I ended up getting the Lokithor J400 on sale for $32 instead though. The fact that the J400 is UL listed among other specs and better reviews made it a better sale for me. The fact that it's cheaper doesn't hurt either, even though though the J400 is lithium polymer. Maybe over time the LiFePO4 starters will be more widely used and UL listed.
I'm not saying you shouldn't trust the UL listing claim, but make sure you verify that it's actually UL-listed and review exactly what the listing covers. If it's not UL 2743, it doesn't mean anything. 2743 is literally the listing for portable power packs...not the small kind that can be used to charge your phone, but specifically those for "emergency situations". It could have a UL rating only for the cable or something equally unimportant compared to the battery and its safety components.

https://www.intertek.com/blog/202...-standard/

Editing to add: just because something isn't UL listed doesn't mean it's not safe. The NOCO Boost GB40 is the lithium jump starter; it's got almost 126k reviews and 4.6 stars on Amazon...and it's not UL listed. It, is however, Intertek ETL listed to indicate that it was tested to conform to UL 2743. UL testing is stupid expensive and there are third-party labs (OSHA Nationally Recognized Testing Laboratory, or NRTLs) - Intertek being the most well-known - that will test to UL standards. They'll get the ETL mark, but they can't actually claim to be UL listed.

https://ramuk.intertekconnect.com...enDocument

Second edit because I'm on a roll: and even if something has the ETL mark, you need to do your due diligence and confirm what that means. For example, the AstroAI S8 jump starter with air compressor has the vague "meeting national standard UL & FCC Certifications" in its description. And, in fact, it does appear to have an ETL listing meeting UL standards...for 1839, which is literally just the cables themselves:

https://ramuk.intertekconnect.com...enDocument

So if you're genuinely interested in getting something that's been tested as "safe" (as much as anything can be, barring defects and the possibility of a company changing their product later to be a crappier version of what was tested), make sure you know what to look for.

Third edit because why the hell not: I can't find LOKITHOR in the UL Prospect IQ database. The abridged site (linked below) should be enough to discover if they have a listing, but I went ahead and logged into the site since I already have an account through work and I couldn't find them, either. I have a sneaking suspicion the claim of UL listing is actually a claim that they meet some UL standard, though they're not showing up the Intertek database, either. It's certainly possible they used another NRTL and are legit, but you'd need to find out.

https://productiq.ulprospector.co...m=LOKITHOR

https://ramuk.intertekconnect.com...uzzy=FALSE

Fourth edit because lol: I'm not sure where you're seeing that the J400 is UL listed, because I can't find it on their product listing and it's not coming up with the Rufus search or in any Q&A. I think you might be mistaken.
Last edited by rczrider April 14, 2026 at 08:19 AM.
Apr 14, 2026 04:05 PM
616 Posts
Joined Jun 2012
-MoistTowelette-Apr 14, 2026 04:05 PM
616 Posts
Quote from rczrider :
I'm not saying you shouldn't trust the UL listing claim, but make sure you verify that it's actually UL-listed and review exactly what the listing covers. If it's not UL 2743, it doesn't mean anything. 2743 is literally the listing for portable power packs...not the small kind that can be used to charge your phone, but specifically those for "emergency situations". It could have a UL rating only for the cable or something equally unimportant compared to the battery and its safety components.https://www.intertek.com/blog/202...-standard/Editing to add: just because something isn't UL listed doesn't mean it's not safe. The NOCO Boost GB40 is the lithium jump starter; it's got almost 126k reviews and 4.6 stars on Amazon...and it's not UL listed. It, is however, Intertek ETL listed to indicate that it was tested to conform to UL 2743. UL testing is stupid expensive and there are third-party labs (OSHA Nationally Recognized Testing Laboratory, or NRTLs) - Intertek being the most well-known - that will test to UL standards. They'll get the ETL mark, but they can't actually claim to be UL listed.https://ramuk.intertekconnect.com...enDocumentSecond edit because I'm on a roll: and even if something has the ETL mark, you need to do your due diligence and confirm what that means. For example, the AstroAI S8 jump starter with air compressor has the vague "meeting national standard UL & FCC Certifications" in its description. And, in fact, it does appear to have an ETL listing meeting UL standards...for 1839, which is literally just the cables themselves:https://ramuk.intertekconnect.com...enDocument So if you're genuinely interested in getting something that's been tested as "safe" (as much as anything can be, barring defects and the possibility of a company changing their product later to be a crappier version of what was tested), make sure you know what to look for.Third edit because why the hell not: I can't find LOKITHOR in the UL Prospect IQ database. The abridged site (linked below) should be enough to discover if they have a listing, but I went ahead and logged into the site since I already have an account through work and I couldn't find them, either. I have a sneaking suspicion the claim of UL listing is actually a claim that they meet some UL standard, though they're not showing up the Intertek database, either. It's certainly possible they used another NRTL and are legit, but you'd need to find out.https://productiq.ulprospector.co...m=LOKITHORhttps://ramuk.intertekconnect.com...uzzy=FALSEFourth edit because lol: I'm not sure where you're seeing that the J400 is UL listed, because I can't find it on their product listing and it's not coming up with the Rufus search or in any Q&A. I think you might be mistaken.
If you go to the specifications on the J400 it shows that it is UL. This is a Chinese company so it may be made up, but they show it for the J400 and not the J2250. Personally, I'm still uncomfortable having either lithium polymer or LiFePO4 batteries in my closed vehicle with over 110F temperatures inside. If I don't like the J400, I'll return it but I figured I'd at least give it a try. I haven't seen NOCO or others selling LiFePO4 jumpers yet. I'm ok with still using AAA anyway.

Sign up for a Slickdeals account to remove this ad.

Apr 14, 2026 09:19 PM
2,797 Posts
Joined Jun 2014
rczriderApr 14, 2026 09:19 PM
2,797 Posts
Quote from -MoistTowelette- :
If you go to the specifications on the J400 it shows that it is UL. This is a Chinese company so it may be made up, but they show it for the J400 and not the J2250. Personally, I'm still uncomfortable having either lithium polymer or LiFePO4 batteries in my closed vehicle with over 110F temperatures inside. If I don't like the J400, I'll return it but I figured I'd at least give it a try. I haven't seen NOCO or others selling LiFePO4 jumpers yet. I'm ok with still using AAA anyway.
Yeah, I still don't see it. Rufus doesn't return a hit. Their own website doesn't mention it: https://www.lokithorshop.com/prod...ed-2000amp

I understand the hesitation, but all things being equal - quality components and a non-defective battery - 110F won't bother it at all. I explain why in a different thread: https://slickdeals.net/f/19413771-prime-members-prime-members-astroai-s8-air-3000a-peak-jump-starter-w-150-psi-air-compressor-34-80-free-s-h?p=183625611#post183625611
Apr 14, 2026 09:50 PM
126 Posts
Joined Aug 2009
mogoreanuApr 14, 2026 09:50 PM
126 Posts
Found the manual here: https://www.lokithor.net/download-j2250pro
Model: J2250 PRO
Capacity: 51.2 Wh (4 ah)
Input: USB-C: 5V / 3A, 9V / 3A, 12V / 3A, 20V / 3A (60W)
Input: DC 5-20V, 5A (Max 60w) not sure how that works
Output: USB-A: 5V / 3A, 9V / 2A, 12V / 1.5A (QC 18w)
Output: USB-C: 5V / 3A, 9V / 3A, 12V / 3A, 15V / 3A, 20V / 3A (Max 60W)
4Ah battery is kinda disappointing, to deliver 2kA it would have to run at 500C which is wayyy overstretched. Wouldn't have believed 8Ah at 250C either, but at least a good 8Ah would have been able to deliver 1kA.
Apr 15, 2026 12:44 PM
1 Posts
Joined Sep 2022
LavenderPicture1921Apr 15, 2026 12:44 PM
1 Posts
Great deal
Apr 15, 2026 01:57 PM
616 Posts
Joined Jun 2012
-MoistTowelette-Apr 15, 2026 01:57 PM
616 Posts
Quote from rczrider :
Yeah, I still don't see it. Rufus doesn't return a hit. Their own website doesn't mention it: https://www.lokithorshop.com/prod...ed-2000ampI understand the hesitation, but all things being equal - quality components and a non-defective battery - 110F won't bother it at all. I explain why in a different thread: https://slickdeals.net/f/19413771-prime-members-prime-members-astroai-s8-air-3000a-peak-jump-starter-w-150-psi-air-compressor-34-80-free-s-h?p=183625611#post183625611
When you look at the Amazon listing for the J400, go to Product Specifications, then go to User Guide, it shows Specifications Met: CE, UL. I think yesterday it showed CE, ETL, UL. Whether or not it's valid, I don't know, but it shows it and the J2250 doesn't. Still, even though the J2250 says it has LiFePO4 batteries, you wouldn't know unless you opened the unit and examined the batteries inside. Even then, you probably would have to open the batteries to do a chemical analysis to know for sure, which I'm not recommending. With these Chinese jumpers you're basically just going with what they mention. They also state in the J400 manual to not keep it in a place that is < 14F or > 131F. Does this just cause the battery to not work anymore or blowup? Who knows. Also, the Lokithor jumper clamps are a lot bigger than the Noco clamps. Folks should make sure it will even fit in on their battery in their engine bay. Do I trust that the Lokithor will work when I need it, I dunno, but I guess it's better than nothing. And I always have AAA.
Apr 21, 2026 02:29 PM
879 Posts
Joined Apr 2010
LL_RRoDApr 21, 2026 02:29 PM
879 Posts
Quote from -MoistTowelette- :
Do I trust that the Lokithor will work when I need it, I dunno, but I guess it's better than nothing. And I always have AAA.
I mean you can test these by just disconnecting the battery and hooking it straight. I wouldn't run the vehiclie off this thing or anything but you can test it years down the line.

Leave a Comment

Unregistered (You)

Popular Deals

Trending Deals