[dalamak]

I've gone through a couple of batteries in my 01 SLS, including two Optima red tops.

The data center in the morning usuallly reads about 14.9 volts, and the lowest it goes too after a cruise is 14.3. all the under seat cables and connects are new, and its running a optima red top. Just wondering what's the norm around here. I know most after market amps, and electronics are rated at up to 14.4 volts

 

[ThumperPup]

I have noticed my 2000 sls has been as high was 15.8 some morning when i first get in
and some morning its in the 13.0s

i run interstate batteries and have yet o have any problems

 

[Ranger]

Dalamak, your volts are right in the ball park.

 

[cadi509]

There's a lot of electronics the alternator has to run so high voltage is common mine runs up to 14.7 at some times, I believe the alternator is 140amp?

 

[johnny-cash]

i get 14.3 when i turn mine on then if i turn on the radio it goes down to about 12.8 at idle. i have a in line converter on the rear sub to send signal to my amp so i could keep the stock bose deck. so when i turn the radio on it then in turns turns on my amp as i wired the amp turn on switch to the radio fuse. your good to go right where you need to be.

 

[Skiller.]

Normal operating voltage is from 11.5 to 15.5 volts. My car consistently reads 15.3 after start and drops to about 14.5 and stays there.

 

[RippyPartsDept]

make sure you check the voltage before you actually start the car to get an idea of where the battery is at when the alternator isn't charging it