A good battery is the most important issue in keeping the t3's running. I tried starting my bike with what I thought was a good Varta battery on the w'end to no avail. As a back up, I had bought a Yuasa and had it on the opti-mate for a few days, hooked it up and the bike started in seconds. A tip when using the opti-mate.... switch it off-on when it shows green. This puts it in charge mode again,do it several times.Makes a big difference

ps...does anyone know why Triumph didn't put a more powerful battery in the t3's?