Jimmy W1

13.8 to 14.2 is the normal battery range when the car is running/charging. With the AC and the lights on it should still stay within that range........

FIZZ

vetts don't like to sit. I suggest a C-Tek Battery tender/charger, plug that baby in when not being driven and your worries become a thing of the past. I have the 7002 for my car and i use it on my diesel truck over the summer while I drive the vett, I also haxe the 800 sieries for my bike and snowmobiles but C-Teck also makes a 3000 series, 3002?, I thinkyou will onlu need the 7002if you have a deep cycle dual truck battery like a dual battery like whats on most heavy duty trucks. several vendors on here sell them cheap and you can pick options, such as: stealth link/Quick connect&comfort indicator to inform you of the current condition of your battery

FIZZ

Clean and re-tighten your terminals too

LS WON

I only started using the CTEK 3200? a few months ago. On the extra clamps I bought it has an indicator that shows condition of battery from red, amber to green. On one of my cars it may take up to 3 hrs. for it to get to fully charged up after using car. On Corvette it comes back anywhere from a few minutes to an hour from amber to green.