Hi, Are these facts or fictions about old battery (5+):
- Old battery increase the load of the alternator, in a significant way I assume.
- Old battery makes engine works harder and consumes more gas, in some noticeable way.
I have two cars with old batteries and am thinking whether I need to replace them. They work fine and have no start up problems of any sort. I just couldn't figure out a logical explanations for these. I thought battery is only for startup and power accessories when the engine is not running.
Appreciate any info.