What causes your motorcycle battery to drain when its off?

A motorcycle battery can drain when it's off due to several factors, including parasitic draws from electronic components like alarms, clocks, or fuel injection systems that continue to draw power. Poor connections or corroded terminals can also contribute to battery drain by increasing resistance. Additionally, an aging or failing battery may not hold a charge effectively, leading to quicker depletion even when the bike is not in use. Regular maintenance and checks can help mitigate these issues.