Rugged, winter-ready, and trusted by professionals. The LOKITHOR J401X is the cold weather jump starter built to perform when others fail.
Unmatched Starting Power for Extreme Environments
When winter hits hard, the LOKITHOR J401X delivers. This powerful cold-weather jump starter is built for gas engines up to 8.5L and diesel engines up to 6.5Leven in freezing temperatures. With a first-of-its-kind internal battery warmer, the J401X delivers reliable jump-starting power down to -40°F, ensuring full performance even after sitting in freezing temperatures.
Whether you're stuck on an icy road, working at a remote job site, or handling emergencies in a blizzard, the J401X starts your vehicle when standard boosters cant. Trusted by winter drivers and professionals alike, its the best cold-weather jump starter for harsh conditions.
Multifunctional Emergency Power Solution
More than just a cold-weather jump starter, the J401X is a complete winter power solution. With USB fast-charging and a 74Wh internal battery, it powers phones, tablets, and tools in extreme environments. A built-in high-intensity flashlight with SOS and strobe modes keeps you visible during breakdowns or whiteout conditions. Be prepared for more than dead batteriesconfidently tackle any cold-weather emergency.
Smarter, Safer, Stronger
Equipped with reverse polarity protection, spark-proof technology, and overheating safeguards, the J401X delivers safe power every time. Its high-performance lithium battery thrives in subzero temperatures, while the impactand dust-resistant shell makes it rugged enough for the harshest environments. This is the cold-weather jump starter built for real-world challenges.
Why Professionals Trust LOKITHOR
LOKITHOR owns its entire manufacturing process, ensuring high standards and lasting reliability. This cold weather jump starter is field-tested by off-roaders, fleet mechanics, and cold-climate drivers who rely on it daily. Its known for rugged performance, smart design, and unbeatable value in winter conditions.
Be Prepared for WinterAnywhere, Anytime
Winter wont wait, and neither should you. Tackle freezing temps and dead batteries with the cold weather jump starter that never backs down.
Add the LOKITHOR J401X to your gear today.

- UPC:
- 889551120203