The One Jump Starter, No. JTC4250, from Lokithor, is a four-in-one jump starter, battery tester, car charger, and power bank. It has a peak current of 4250A and can jump-start gas engines up to 10L and diesel engines up to 8L. It functions as a tester for 12V lead acid batteries, providing state of health, internal resistance, load test, and other data, and it can save the results. It also works as a battery charger, maintainer, desulfurizer, and as a trickle/float charger. It features type C two-way 60W fast charging for charging multiple devices at once. It also has a 300 lm LED light.