LOKITHOR J3250 PRO Jump Starter with ConnectMax 3250A LiFePO4 Car Starter Battery for 9 5L Gas and 7

Excellent battery LiFePO4 technology, high capacity, large, easy to understand display, versatile functionality, plenty of connection options (USB-A and USB-C), fast PD (up to 60W) charging (functions as PowerBank as well), flash light (white and red LEDs). I am happy to own the J3250 model, since it is currently no longer offered, and has been replaced by higher priced, lower output and battery capacity models… Read more

Jump starts everything I've hooked it too.. way better then the original version.. Read more

Works for a kinda dead car, but cant even start a diesel 2.0 bug let alone 5.9 or 6.0 diesel. Saw very promising results for the regular lithium lokithor reviewed on project farm and assumed the brand would keep the quality for other products, not the case. It is now completely non functional after attempting to jump a 6.0. Read more

Batteries in this unit are LiFePO so lightweight and long life. Charged the battery to full before first use. The build quality so far is nice. feels solid. I've used this 3-4 times now to jump my fun-car back to life because it sat too long. Each time its able to start the car without hesitation and has yet to even come down from full-charged on the battery display. I would recommend this to anyone especially for this use-case with a frequently depleted but not dead battery that needs a bit of help to start the car. This is simple as it gets and reliable in my experience. Read more

The good: It works so far! Arrived half charged (as it should) and charges at 62 watts with a proper USB C PD brick that can output 3 amps at 20 volts. The displayed charging/discharging wattage is accurate according to my inline USB C meter. I jumped an early 2000's Nissan Sentra (little 4-banger) that had enough juice to barely turn on some dash lights, but would only click when turning the key. I connected everything, hit one of the buttons to wake it up, and a couple seconds later you could hear the click of the relay. I got in and the car started right up. The bad: Wires are very clearly aluminum rather than copper. Usually they copper coat it it to be sneaky, but these are just straight up aluminum. They are 6 gauge though which isn't too bad. Aluminum is cheaper, but worse for a few reasons. Aluminum will get brittle and break from bending back and forth much much quicker than copper will. Aluminum is also less conductive than copper, which could be detrimental when pushing the limits of this thing. If you're only ever jumping small 4 and 6 cylinder engines, it's probably fine. But I'm a little nervous about how it will do if I need to jump my diesel at some point. The clamps however do look like copper, but disappointingly they are copper plated steel. And not just a little bit of steel, these things are VERY attracted by a magnet. As you can see in the photos, the magnet on my flashlight is holding itself against gravity, even with the decently thick outer plastic adding space between the metal and the magnet. I'll be on the search for a set of cables/clamps that are copper through and through, but for now, technically it still works Controls/buttons are not entirely intuitive and not marked very well, so snap a picture of the manual for a few years down the road when you're trying to do the manual override to jump a battery that's completely dead and have forgotten that you have to press and hold the power and light button at the same time for 1 or 2 seconds. Overall: Not bad for $100 (after the $20 coupon that was available). I had a few basic requirements when I was looking for a jump starter: 1) LiFePO4, which was important to me because with any luck I'll likely get more use out of this as a power bank than a jump starter. LiFePO4 has the advantage of a vastly superior cycle life compared to the normally used lithium ion and lithium polymer cells, so (theoretically) will be useful for many more charge and discharge cycles. 2) Because of my desire to use as a power bank and my attempt to "USB C" everything that needs DC power in my life, I wanted a USB C port that handled charge and discharge, could input and output the full range of voltages (5, 9, 12, 15, 20), and could provide at least 30 watts so that it could be used with my laptop. I wanted the full range of voltages because I often use a USB C PD trigger that's wired to some little alligator clips to provide whatever of those voltages I want to test/mess with/troubleshoot various devices in my travels. All the voltages and 3 amps should be plenty for most of what I encounter, except one of my junky USB C soldering irons that shuts down if it can't pull 80 watts. 3) Capable (at least in theory) of jumping most any "normal" car or pickup on the road, aka any v8 diesel or V10 gasser that you'd see in a pickup/cab&chassis or smaller. 4) The option to manually turn on voltage to the clamps. Most all jump packs rely on sensing the low, but still present, battery voltage to know they are connected and then start charging/jumping. That's great and all, keeps you from shorting the cables out on each other, but not so great when you left the light on by accident and the battery is 99% dead. Plenty of jump starters do have an option to manually apply voltage for those ultra dead batteries, but there are some that don't for some dumb reason. 5) One USB A port that I hopefully never have to use, but will likely need at some point because USB C hasn't quite taken over the world yet. Anyway, this jump starter was the only one I could easily find that checked all the boxes, and at $100 it was too good to pass up. I suppose the aluminum wires and steel clamps are acceptable for the price point. I'd rather they cheap out there instead of cheaping out on the unit itself (yet to be known for sure if they did or didn't) Read more

This thing may likely be the best purchase I've eve made. I have several older vehicles and there's always somebody that doesn't want to start. This product has started everything, every time, even with a vehicle battery completely dead. Read more

This thing works great started an old 1978 Perkins 4cyl diesel in a sailboat the other day with it and NO other battery at all just put the unit in override and it had no problem turning that old motor over. Recharged super quick with on USB C afterwards. Quite impressed and happy with it. The lights are an added plus I could see using this on the roadside as a extra warning light with those. I don't understand how the optional storage case is almost half the cost of the unit that's just silly. Read more

Have been using it for about 6 months now at our dealership. I would highly recommend this jump pack to anyone looking for a quality jump pack. Read more