left lights on, killed batt. Charge or replace?

[Gilles]

Originally Posted by Starter986

I would remove the battery... hook up another battery.. start the car... remove that battery (with the car running)... hook up the dead battery... and let it "charge" for about 15 minutes.

I'd then shut off the car... hook up the battery charger... and the battery would register just enough juice to allow the charger to do the job. Has worked every single time I've encountered that problem.

I would not feel comfortable disconnecting the battery while the engine running as you may damage their sensitive electronic systems and may be more expensive than a new battery..