For a long time, users of jump starters have faced three key issues: safety, starting performance, and portability. While safety and starting performance can be improved through various means, achieving portability has always been the most challenging. Ensuring safety and starting performance often requires a larger device, which compromises portability. LOKITHOR has risen to the challenge through persistent technological innovation. In 2024, we finally found a near-perfect solution to these three problems and implemented it in the J400. This product excels in safety and starting performance w…