diysv6
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- Dec 17, 2005
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- VF S1 SV6 STORM A6: VZ S1 SV6 A5
Hello all,
My battery is approx 4.5 years old, (SV6 Auto - Build date July 2015) never been flattened, and driven in mostly south east Qld weather conditions.
I usually check the Battery Voltage screen every few week to see if the battery is "behaving" eg. after a long trip 100/300km, on the next start after the trip, the battery shows as a lower charge voltage eg. 13.x volts. After a few days of normal suburban driving, the battery runs at about 14.8V which is the "normal" voltage under most conditions. My HVAC runs all the time. I don't have any fault indications on the dashboard display.
Today, I noticed the battery voltage was 12.6V after start up, and stayed for a short trip of 7 kms. HVAC was running OK. At about the 6 kilometer point in the trip, I turned on the headlights and the voltage dropped to 12.4V. Turned off the headlights, and the voltage went up to 12.6V. Evidently there was some ECU/regulator function response when the load increased/decreased.
Upon restarting, the initial voltage was 14.8v and dropped within a kilometer to 12.6v again and stayed there.
Is this a conditioning cycle by the ECU to maximise battery life/performance to some preprogrammed voltage/load curve, or is this the pretesting sequence which indicates a battery failing sometime in the near future?
I am happy to buy the designated Holden/AC DELCO battery, as I still have Holden warranty until September 2020. I don't look forward to arguing any MyLink/ECU/HVAC/battery/alternator issues with Allianz who seem to manage the extended Holden warranty now.
Thanks for your thoughts in this one.
My battery is approx 4.5 years old, (SV6 Auto - Build date July 2015) never been flattened, and driven in mostly south east Qld weather conditions.
I usually check the Battery Voltage screen every few week to see if the battery is "behaving" eg. after a long trip 100/300km, on the next start after the trip, the battery shows as a lower charge voltage eg. 13.x volts. After a few days of normal suburban driving, the battery runs at about 14.8V which is the "normal" voltage under most conditions. My HVAC runs all the time. I don't have any fault indications on the dashboard display.
Today, I noticed the battery voltage was 12.6V after start up, and stayed for a short trip of 7 kms. HVAC was running OK. At about the 6 kilometer point in the trip, I turned on the headlights and the voltage dropped to 12.4V. Turned off the headlights, and the voltage went up to 12.6V. Evidently there was some ECU/regulator function response when the load increased/decreased.
Upon restarting, the initial voltage was 14.8v and dropped within a kilometer to 12.6v again and stayed there.
Is this a conditioning cycle by the ECU to maximise battery life/performance to some preprogrammed voltage/load curve, or is this the pretesting sequence which indicates a battery failing sometime in the near future?
I am happy to buy the designated Holden/AC DELCO battery, as I still have Holden warranty until September 2020. I don't look forward to arguing any MyLink/ECU/HVAC/battery/alternator issues with Allianz who seem to manage the extended Holden warranty now.
Thanks for your thoughts in this one.