Originally Posted by bluetwo
It wont break anything if you only do it once in a while.
I actually broke down and bought an Altima battery for my Civic because I kept forgetting to turn my running lights off, and it was well worth it because that thing just wont die.
I left my lights on for 9 hours once and the car started right up.
Did you mean an Optima Battery or from a Nissan Altima battery? Because I had an Optima Red top battery and just left my car there for almost a week and the car had troubles starting. Took the battery to Autozone and got it tested and it was dead. I ended up getting the Optima Yellow top and hope it can last.