|
Charging:
- Overnight seems to work reasonably well in a battery that has not been too badly discharged.
Discharging:
- If you're driving during the day, and not starting/stopping much, an older car can run for a day off a fully-charged battery that gets recharged overnight.
- A newer car needs more electrical power than an old one, because newer cars have a lot more electrical doo-dads to consume power. Plus a number of those systems are more sensitive to the voltage droop that will happen as the battery gets discharged. (Example: I ran an old car until the voltmeter dropped below 9V when the alternator failed on me. Later, after swapping in an electronic ignition for the points, I had another charging failure. The car died when the voltmeter dropped to 10V.)
Unfortunately, I think the real answers in this case are "try it and see".
-soD
|