These are not your grandmother's external battery posts. These are BUILT AMERICAN TOUGH Military Spec Heavy Duty no nonsense Jump Start Charge Units. These are your sub-zero, Antarctic, Deep Space, heavy glove and mitten wearing posts. You won't be "blessing" these posts for not having a good connection or not being able to use them with your gloves on. These power hungry post allow “easy” remote access to battery connections for jumping or charging, in both automotive, RV and marine applications. Ideal for batteries in hard to reach locations. Jump Start Charge uses standard battery cables and operate as power pass-through points to a more convenient location. Use Jump Start Charge under a hood or in a compartment.