Positive are various options for connecting to the battery! Both classic with alligator clips, cable lugs for fixed bolting on the pole terminals and a plug for the 12-volt socket (cigarette lighter). After connecting to my roadster, it took until the battery is fully charged about 10 hours. Then the device was in the state of preservation, the green indicator light on the device will then stop flashing and burns permanent pasture! I have the device permanently mounted near the outlet on the wall so that I always have an overview of the current status of the battery! Conclusion: I would highly recommend buying this device anyone who wants to hibernate a motorcycle or car!