My car battery recently died and I was wondering if it is more cost effective to re-charge it or replace it with a completely brand new battery.
I know car batteries are charged with the alternator when the car is on, but I was not aware that car batteries could be charged back to full using a portable battery pack or a battery charger that plugs into a standard AC outlet. I always thought people just threw out car batteries once they died.
If I charge a completely dead battery at 12.0V to 12.6V for example, how much money does it cost in terms of electricity to charge it back to full? Also how long would it take to charge it back to full? I'm not exactly sure what units of measurement, conversion, exact mathematics, etc. to use to calculate such a problem.
I should have corrected my question to remove the cost of the charger. Both charger and new battery will cost money but I meant to ask, over a longer period of time, which method would save the most money.
Almost everywhere that took the time to answer brought value to the question, thus it is my opinion that awarding an answer to one person would be unfair. Originally, I should have cleared up the confusion about a discharged better versus a battery that is dead (i.e., cannot hold a charge anymore). The battery in question is discharged and since I was not aware that batteries could be recharged, it makes sense that charging it is the most cost-effective method.