What should my new battery be reading?

ex-boxing champ · 10-24-2022, 07:03 PM

My car was sitting at a Chevy dealership for the past 6 weeks. They put in a new AC Delco battery as part of the repair. The highest the voltage gets on normal city streets is 13.5 while I'm driving. It drops down to 12.3 after awhile. Is this normal? I don't have a voltage meter to check the voltage while the car is not running. The auto zone in our city doesn't have a working voltage meter either to check. Should I take the car back to the dealership or is 12.3 to 13.5 normal while the car is running? Can we check the voltage on our car dash with rhe car not running?

arpad_m · 10-24-2022, 07:23 PM

The car has an intelligent, load based charging system with a dual function battery gauge. When the alternator is charging the battery, you'll see voltages from 13.5 to 14.5V, whereas the gauge will show actual battery voltage whenever it is not being charged, that's when you see voltages between 12.25 and 12.75V.

10-24-2022, 07:03 PM	#1
ex-boxing champ Drives: 2016 chevy camaro Join Date: Dec 2021 Location: Florida Posts: 43	What should my new battery be reading? My car was sitting at a Chevy dealership for the past 6 weeks. They put in a new AC Delco battery as part of the repair. The highest the voltage gets on normal city streets is 13.5 while I'm driving. It drops down to 12.3 after awhile. Is this normal? I don't have a voltage meter to check the voltage while the car is not running. The auto zone in our city doesn't have a working voltage meter either to check. Should I take the car back to the dealership or is 12.3 to 13.5 normal while the car is running? Can we check the voltage on our car dash with rhe car not running?

10-24-2022, 07:23 PM	#2
arpad_m Drives: 2018 Camaro 2SS A8 Join Date: Jul 2017 Location: East Tennessee Posts: 11,696 View My Garage	The car has an intelligent, load based charging system with a dual function battery gauge. When the alternator is charging the battery, you'll see voltages from 13.5 to 14.5V, whereas the gauge will show actual battery voltage whenever it is not being charged, that's when you see voltages between 12.25 and 12.75V. __________________ 2018 Camaro 2SS — G7E MX0 NPP F55 IO6 735 rwhp \| 665 rwtq Magnuson TVS 2300 80mm pulley \| Kooks 1 7/8" LT headers \| JRE smooth idle terminator cam \| LT4 FS & injectors \| TSP forged pistons & rods JMS PowerMAX \| DSX flex fuel kit \| Roto-Fab CAI \| Soler 95mm LT5 TB \| 1LE wheels \| 1LE brakes \| BMR rear cradle lockout \| JRE custom tune 1100 - 1/30/18 \| 2000 - 1/31/18 3000 - 2/06/18 TPW 2/26/18 3400 - 2/19/18 \| 3800 - 2/26/18 4300 - 2/27/18 \| 4B00 - 3/01/18 4200 - 3/05/18 \| 4800 - 3/14/18 5000 - 3/16/18 \| 6000 - 3/19/18

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