Features:

• 18" cord adaptor
• Plugs into all Deltran BatteryTenders
• Convenient for hard-to-access batteries
• Adaptor plug is compatible with most heated suits for motorcycles or snowmobiles
• Both Alligator Clips and Ring-Terminals come with each BatteryTender

Rating : - Great for some batteries, not all though
These are great units but if you are going to attach the quick disconnect to a modern automotive battery installed in an auto, think twice. Newer battery cables do NOT allow these rings to attach to the battery at the battery posts. You'll have to connect the 'Rings' to another positive and negative terminal location.

If using on an auto, a better option is the cigarette lighter/power plug unit. http://www.amazon.com/Deltran-Battery-Disconnect-Cigarette-Adapter/dp/B000NCMSAK/ref=pd_sim_auto_title_3

Quality of the unit is very good. 4 stars because they don't say, will not work on all battery's. Also, the rings are not large enough to accomodate an automotive battery cable post attachment. The holes must be enlarger unless you are attached to other than the atcual battery