This Harley Davidson Battery Tender with USB plug-in for the Bike is a nice package. Keep your battery from going dead for those long winter days or rainy days changed til you have those nice days or just keep it changed so it wont go dead . Also you get a Plug- in and go for your bike. Take the tender plug-in to hook into your tender wire from the bike and plug your Phone or GPS so you always have a fully changed battery to them .