Dodge Challenger battery draining issue persists despite new battery and tested alternator on Dodge Challenger

Some Dodge Challenger owners report experiencing persistent battery draining issues despite having a new battery and a tested alternator. These problems may stem from parasitic drain caused by components that draw power when the vehicle is off. Additionally, owners should review any recently added electrical components, such as aftermarket stereos or alarms, which could be contributing to the battery drain. In some cases, the engine controller's voltage regulation may be at fault, meaning that simply replacing the alternator won't resolve the issue, and a new engine controller might be necessary. Even with a new battery, some owners find that it could still be faulty, so testing the battery with a battery tester is advised. Other potential issues to investigate include failed relays, loose battery connections, or poor ground connections. Lastly, if the battery is not new, it may be weak or nearing the end of its lifespan, as batteries typically last between 3-5 years. Systematic investigation of these factors can help identify the root cause of the battery drain and lead to effective resolution.