I have a 99 honda civic hatchback and my batteries keep dying out on me and i keep having to go to autozone to replace them. I dont know whats causing my batteries to die out. I have a 1500+ watt sound system in my car and i was wondering if it was too much for my original alternator and causing it not to work correctly? Would i need to upgrade my alternator? help!

 

my buddy had a system in his civic and the batteries kept dieing and his mechanic told him to get one of those optima yellow top batteries. he hasnt had any issues with it yet.

 

get a HO alternator, i've got one for a d-series, 180 amperes vs 70 on the stock one.... i got it from excessiveamperage.com

 

Did you ever get your alternator checked? Its probably not your battery that is the problem. Your alternator is probably fried therefore resulting in your car just running off the battery until that takes a crap also. Get the right setup for your system. This is why noobs should not be attempting things like this in the first place.