Ditch the lead battery and get a pack attached to your starter. Not only is it lighter and more convenient, but it's safer too without that cord flopping around. I use a 4 cell 2500 mah Lipo battery for mine and have to charge it about 4 times a year. A lipo/life charger will set you back $30. $10 more will get you a computerized charger that can charge anything.