Hey guys,

Quick question. I bought a car inverter to plug in my laptop. Sometimes when im bored and waiting in the car, i want to watch movies and stuff. With the engine off, how long do you think the car battery will last on a 90W discharge? I dont want to drain all the battery causing the car to not start. Anyone can give me a rough idea?

 

my stock battery lasted exactly 3 years. I think it was on it's way out becuase as soon as I installed my system, the battery went down. if it sounds like your starter is turning a little slow I'd just replace the battery already. That's what happen to me, within a couple of days I could hear the starter getting slower and next thing you know it wouldn't turn over.

 

no no no, thats not what i meant. I wanted to know, if I used the accessory power from the car with the engine off, how many hours or minutes could i use it for before the battery gets drained and won't have enough power to start the car.

 

i do this all the time for about a hour or 2 the longest iv done it is 3 1/2 hours!!!

 

Mine lasted 3 1/2. thought they would be better batteries