I am having an issue with my 1997 Ford Ranger's "check battery" symbol not going off and showing mid-low battery strength. Here's the history
On Saturday I hooked up a small compressor to inflate two bicycle batteries (with the car turned on, but engine not running).
On Sunday the wife drove about 3 miles, but noticed the "check battery symbol".
On Monday drove to work (about ten miles) total and into town (about 40 miles total) and bought a battery charger. Charged battery for about 2.5 hours until the charger said "Battery Fully Charged". However immediately after unplugging the charger the symbol is still there and the strength still remains at mid-low.
The thing that I am puzzled about is how I have yet to have any real problems YET. Tonight I am going to use the "Alternator Check" that the charger I bought comes with. Anybody have any ideas what could be going on and what to do about it? I only have one vehicle so I want to tackle this before I end up getting stuck somewhere.
Thanks a lot I really appreciate (and am envious) of what you folks know and can do!