https://www.batterytender.com/products/junior?srsltid=AfmBOoqK07xPDZjzWW_PDpPvpnY_uBjzovzG6GpOhwGXHizdXppO1cnS
12V, 650mA
Automatic battery charger for motorcycles and other powersports.
The cable is split into two halves. The first has the charger and plug into an outlet. The second connect to the battery terminals of your bike and has an inline fuse (which is not blown). You can leave the second half connected to your bike at all times and run the connector, which has a protective cover, to an accessible location for you to plug into at home. It pretty great.