DELTRAN BATTERY TENDER 25 FT ADAPTOR CABLE 4 PACK 25 ft. Extension Lead for use to extend the length of the chargers reach from input to battery. Use the 25 foot long lead extension with the Battery Tender Junior, Plus, 2, 4, 5, or 10 Bank units. (Not for use with the 6 Volt Battery Tender Plus or any other Battery Tender product with white quick-disconnect plugs.) Info from Battery Tender Website 5/22/12 ARS