LOKITHORJ2250 PRO Jump Starter with ConnectMax, 2250A LiFePO4 Car Starter Battery for 8.0L Gas and 6.0L Diesel Engines, Jump Pack with 60W Two-Way Fast Charging, Super-Safe and 2000 Cycle Life

Worked great the 4-5 times I needed to use it to jumpstart a vehicle over the past year or so, but now has a 201 error code whenever powered on. Battery did not lose charge even when stored for months. Disappointed it only lasted a year and a handful of jump starts; I have tried to completely drain the battery and recharge with no luck.Edit: Lokithor rep has reached out and offered a refund on a replacement device that I purchased, will update review if new device has a similar issue down the road

Jump-Starter worked right out of the box. very nice unit.Battery died on me and car was stranded at home. I decided to buy this for any future issues.Came over 75% charged and started my car with a dead battery right up no issues.Charged up with a 15 watt USBC power adapter in no time.Super nice setup. Came with extra USBA and USB cables along with a cig adapter for car charging.Nice case and connector quality. doesn't feel cheap.I'm surprised most people want to use Lithium ion and this was the only Lifepo4 battery Jump starter.Lifepo4 is the future. Thanks for making a great product that got me back on the road.

Seems very well-made. I haven’t used it yet, but it’s appears to be just what I was looking for.

This little jump battery is impressive. It jumped off my truck without a problem on the first try. A big selling point is that it's a Lithium iron phosphate (LFP) and not a Lithium-ion or (Li-Po) battery. The FLP comes ahead in cost and safety while offering comparable performance to Li-Po batteries. On the other hand, LiPos provide higher capacities at a smaller size and lighter weight, making them more suitable for specific applications where limited space or weight matters most.The most significant selling point is that Lithium iron phosphate is less prone to thermal runaway and overheating, issues that have led to lithium-ion batteries having a reputation for a higher risk of battery fires.

I used once and then I got a "201 error". The unit powers up then displays the error and warning light and shuts down. (The error explanation is not indicated in the user guide but according to other model in refers to a charge problem.)Had a bit of a hard time getting the warranty hounoured. Explicitely says 2 years on product page on Amazon and on website but manufacturer claims it was 1 year. They did admit their error and got refund after filing complaint with Amazon.You really get what you pay for. Quality 2250 amp boosters are double the price. I got lured by the low price. Buyer beware.

Top notch charger

I used this jump pack to start my car after leaving the dome light on for a few days. The battery was too dead for any of the other jumps packs I own to recognize that I'd connected them to a battery so I had to use the override / boost feature of this one. Forcing the override mode to turn on wasn't obvious (I had to read the manual) but that did the trick. IMHO you shouldn't buy a jump pack that doesn't have an override mode since the whole point of having one of these devices it to be able to jump a dead battery.

Unlike Lithium Ion chargers, these aren't likely to catch fire if you live in a climate where triple degree temperatures are common. I charged this up when I first purchased it roughly 8 months ago. Having checked the charge every month since. it has yet to lose the charge. Every car needs one of these. It's a relief to know you don't need someone else to jump your battery should the need arise.