Using battery charger

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Jun 20, 2003

Klmno

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Using battery charger

I loaned my car to someone and they left the lights on and drained the battery.
Then they hooked it up to a 4 amp charger for 6 hours without disconnecting the battery.
Did they damage my electrical system?
If they did, what will the symptoms be?

Thanks!

Klmno

Jun 21, 2003

ZMan2k2

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Nah, you should be okay. If you're worried about it, next time you go to the dealership, get them to test the strength of your alternator and battery. The rest of the system is protected by fuses and should be okay. But you may want to drive it "sensibly" for the next little while, 3-400 miles, as the ECU may need to re-learn your driving habits.