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

Bought this over the NOCO after seeing reviews and videos. I have a Viking jump pack at 1000a and it is more expensive than this unit. I have used the 1000a to jump all of our vehicles when needed, including my motorcycle and my lawn mower, so this unit shouldn't have any issues with anything I throw at it. Lightweight, compact and easily stores in your vehicle. Bought this to keep in my truck. I like being able to jump start the vehicle without needing another vehicle to use jumper cables. Keeps you self-sufficient and gets you out of a jam if you find yourself alone in a remote area. Charges quickly and doesn't lose charge over time like other traditional jump packs. Like other lithium jump packs, they do recommend that you charge the unit every three months to extend the life of the batteries in the unit. Pretty standard.

This lil guy is AMAZING!! I had a bad battery, and this started my car up right away! It was so easy to use. It kept my car alive each time until I was able to buy a new battery over the weekend! I will not go anywhere without it now. It lives in my car. I also want to note, I fully charged this device as soon as I bought it in November, used it a hanful of times. It has been in my car ever since. It is now, almost February, and I decided to see if it would power on, and it DID! Not only that, but it is has about 98% charge!

For the price, this jump pack is great. I keep it in my work truck and frequently jump start medium duty diesel trucks with it. I usually immediately plug it back in to charge, but its real handy to be able to use it for 6.7L and even 9.0L diesels. I'd buy several of these to have on hand over my NOCO GBX75 which had a battery fail and no longer charges.

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

UPDATED: Worked great to jumpstart my old jeep. We had our first hard freeze of the year and my battery was dead. Jumpstarted flawlessly. I have owned a battery jump starter for several years for our primary vehicle. I bought this particular one to keep in our secondary vehicle. It is compact, but heavy, which, i believe reflects its battery capacity. I havent had the opportunity to jump start any batteries with this Jump Starter yet, so i cant review that aspect, but I like the display - large and bright. I also like the large and extremely bright flashlight, which would be useful in any night-time emergency situation. I also like that there is a usb charging port. This would be particularly useful for charging a dead phone in a crunch. I am glad to know that this will be available when I need it.

I recently purchased the LOKITHOR J400 for my 2007 Lexus IS350, and it’s been a game-changer. Despite its compact size, this device delivers a powerful 2000A peak current, effortlessly jump-starting my vehicle with a completely dead battery. The smart digital screen is intuitive, providing clear information on battery status and operational guidance. Beyond jump-starting, the J400 doubles as a portable power bank, allowing me to charge my smartphone and other USB devices on the go. The integrated 300-lumen LED flashlight with multiple modes is a thoughtful addition, especially useful during nighttime emergencies. The build quality is impressive, with sturdy clamps and a durable exterior. Its lightweight design makes it easy to store in the glove compartment or under the seat. With safety features like reverse polarity protection and overcharge safeguards, I feel confident using it without any concerns. If you’re looking for a reliable, multi-functional jump starter that won’t take up much space, the LOKITHOR J400 is an excellent choice. Highly recommended!

I received this and immediately put it to use for my riding lawnmower which doesn't hold a charge because the battery it uses is so old. Push the power button, plug in the jumper cables, connect it to the battery, wait for it to turn green, and then start the ignition to turn the starter. It powered on immediately! Unplug the cables immediately for safety reasons. This came fully charged and ready to go out of the box. I needed something lightweight to carry around and this was super light. It looks beautiful and modern. It can be stored anywhere and ready to be used because of it's simplicity. It uses any type-c cable to charge it so if you have one that charges your phone, that charges this too.

The LOKITHOR J400 Portable Jump Starter 2000A, 12V Lithium Battery Booster with ConnectMax Tech, S is an absolute unit of an item. I have used the LOKITHOR J400 Portable Jump Starter 2000A, 12V Lithium Battery Booster with ConnectMax Tech, S multiple times to start my Subaru Outback V6 which seems to have a failing battery or at least one that rebels when it gets too cold. The LOKITHOR J400 Portable Jump Starter 2000A, 12V Lithium Battery Booster with ConnectMax Tech, S is small, lightweight, easy to charge, and as a bonus has a powerful light, and I have started my car several times on a single charge with the LOKITHOR J400 Portable Jump Starter 2000A, 12V Lithium Battery Booster with ConnectMax Tech, S. If you have an unreliable battery or run older cars, for the money it is great to keep a LOKITHOR J400 Portable Jump Starter 2000A, 12V Lithium Battery Booster with ConnectMax Tech, S charged on-hand, plus you can start someone else's car without using jumper cables using the LOKITHOR J400 Portable Jump Starter 2000A, 12V Lithium Battery Booster with ConnectMax Tech, S.

Super