I second the battery tender even though I don't stay off the bike long enough for the battery to go dead. I do have however a 67 barracuda that I don't drive much and keep a battery tender on it. The battery lasts much longer with a battery tender. I switch out from my bike, lawn mower, and the cuda. I haven't had to replace the batteries in my vehicles since I started using a battery tender. My Roadster came with a hook up already on the battery so all I have to do is just reach under the side cover and hook it up. Triumph must be trying to tell me something. lol