What is the expected life of a H-D battery?
Proper care is the key to battery longevity. Laboratory tests have shown that consistent use of any Deltran Battery Tender can add as much as three to four times normal battery life (five to seven years is not unusual). What the lab tests can not prove is how vigilant one is about battery maintenance (if watering is required) and how much shake, rattle, heat, and cold the battery has been subjected. If it were me, and I had five years of good service out of my battery, I would be hunting for a new one. What would I replace it with? Our theory is “if you have to fill it, forget it.” In other words, stay with sealed maintenance free, most of the new maintenance free AGM (Absorbed Glass Mat) batteries like the new Harley original equipment batteries are excellent. They never require watering and they come from the Harley dealer fully charged.