J400 Jump Starter - 12V 2000A Lithium Battery Jump Pack, Portable Jump Box, Car Starter, Jumper Cables - for Up to 8.0L Gas & 6.0L Diesel Engines | ConnectMax Tech - Smart Digital Display

This is an excellent product! My car had been sitting for over a year and the battery was completely drained I was told I needed a new one. This jumper was VERY simple to use for a person who hates dealing with anything car related , it came almost 100% charged, & once I connected it to my battery terminal it immediately started my car. This lil thing packs a lot of power I was pleasantly surprised. I would highly recommend and its certainly worth it and cheaper than calling & waiting for a tow or having to waste your time on AAA. Its a great quality item overall im pleased with this purchase

A very good jump pack for the low price I paid for it. It’s come in real handy. I’ve jumped my car at least 6 times since I bought it. My car battery has finally given up on me so I had to replace it, but for a small jump pack it is worth it. It does its job, and quick too. I’ve been able to jump my car in less than 30 seconds after hooking it up. Definitely worth the money, and it’s so easy to use.

I picked up the jump pack just in case my truck ever died, and guess what happened after 2 months? it worked perfectly right out of the box. This thing packs a serious punch with its 2000A peak current – it fired up my 6.5L diesel without any hesitation, and the product claims support up to 8.0L gas or 6.0L diesel engines. The ConnectMax Tech made the connection super safe and foolproof; no sparks or worrying about reverse polarity. I picked up the LOKITHOR J400 Portable Jump Starter after my truck battery died in a parking lot during cold weather, and it worked perfectly right out of the box. This thing packs a serious punch with its 2000A peak current – it fired up my 6.5L diesel without any hesitation, and the product claims support up to 8.0L gas or 6.0L diesel engines. The ConnectMax Tech made the connection super safe and foolproof; no sparks or worrying about reverse polarity. For the price (especially with any deals), this is way better value than calling a tow truck or dealing with sketchy jumper cables. Highly recommend for anyone who drives regularly or travels – peace of mind in a small package. Five stars, no regrets!

The price was reasonable, and I have used this to start my lawn mowers a couple of times.It saved the day, as I really was needing to mow in between the rains. I will get a new zero turn battery next trip out to shop. It is easy to charge, the leads are short, as all of these compact battery packs are.I would recommend this booster.

Fantastic jump starter! The J400 is the perfect combination between price, quality, and features. The USB-C out is great for charging up my phone when camping, and tailgating, and the flashlight is a great addition for night-jumps.The build quality of the unit is good, with a good heft to it while not being too heavy and compact. The J400 is super easy to use with only a few buttons and clear instructions when you get it. I'm overall really happy with the purchase and the jump starter!

Well made, works well. The zippered case is nice, but too small making it difficult to put the cables back in. Otherwise 5 stars.

This jump starter exceeded my expectations. It’s compact but very powerful—I was able to jump my car quickly without needing another vehicle. The smart display is clear and easy to read, and the clamps feel solid and secure. I also like the safety features, which make it straightforward even if you’re not very experienced. It’s a great item to keep in your car for emergencies. Definitely worth it!

I’ve been using the LokiThor J400 for about a month now and I am genuinely blown away. In that short time, I’ve used it 2-3 times on my own 1997 Jeep Wrangler (Dealing with electrical issues.) Ive even helped two strangers get back on the road with dead batteries. This thing is a lifesaver — literally.This unit is barely larger than my hand. I expected something bulky and awkward, but it sits effortlessly in my glove box and weighs almost nothing. You can feel the quality in the weight.The connections are rock solid and the build quality is exceptional. No sketchy clamps, no questionable wiring — everything clicks into place with confidence. It's very straight forward, you plug in the positive & negative clamps and you're good to go. It fired up my Jeep every single time without hesitation.It is also a serious portable power bank. I’ve charged my phone multiple times on a single charge — it has more than enough juice to keep your devices powered up on long trips or during emergencies. Battery life is good.If you want compact size, reliable connectivity, genuine safety features, and ease of use all wrapped into one powerhouse device — this is it. Best purchase I’ve made all year. 10/10 would recommend to anyone who drives a car.

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