if you want to check the condition of your battery there's a easy way you can do it. Connect a voltmeter to a fully charged battery and it should indicate 13.2 volts. if you don't have a set of alligator clips on your voltmeter you may need another person to hold the voltmeter leads to your battery. As you do start or attempt to start your R 3 and if the voltage drops below 10 volts while its cranking your battery is most likely bad.