What is draining my battery alternator is good battery is good blower fan stays on after car is turned off. could this be draining my battery? car stays charged for 3 days then i try to start and the car battery is dead. i will charge battery and it is good to go for three more days. everything else that could drain battery tested good. sometimes my lights and radio stay on after the ignition is turned off. have you heard of this anybody else having this problem?

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There is an electrical short in the system. Have it checked by a professional.
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