No but maybe Optima does.
Dead Battery - Engine stops after 5 minutes
- Thread starter fl4637
- Start date
They are a battery company they want to sell you batteries. Look at the ratings on a battery charger! Far less output than a car alternator!
They pointed out the instructions from an ALTERNATOR MANUFACTURER. What did it say?
Apparently it would appear that the GM engineers and mechanics don't know what they are talking about, so when in doubt read the owners manual.
Under vehicle care "Follow the instructions provided with the battery maintainer package to keep the battery charged when not in use. Plug the battery maintainer into the underhood accessory power outlet only. For vehicles without a battery maintainer remove the black negative (-) cable from the batter to keep the battery from running down.
Extended Storage: It is recommended that the battery maintainer package be used. However, if not, remove the black, negative (-) cable from the battery. All vehicle memory settings will need to be reset when the battery power is restored.
I don't care. I've done it all my life. I graduated in electronics. It's pretty simple stuff. A battery charger puts out 10 to 15 amps . A car alternator puts out 100 to 150 amps. Yes, the car needs some of that, but not nearly all. It's not rocket science.
I said nothing about parasitic draw when the car is off. I said the alternator puts out more than enough power to charge a battery. In fact that's exactly what it is there for. The car runs off the battery and the alternator lets it run down a bit and then charges it back up.
DenisC8
Power User
I agree with @Murray20c8
That is what I said. I heard this from several GM Techs. Here is their view.
Please not the Alternators Role. This is a recent design from manufactures to reduce cost and weight of the Alternator.
While an alternator can help recharge a battery, it's not designed to fully charge a completely dead battery in a Corvette C8, and it's a gradual process.
Here's a more detailed explanation:
- Alternator's Role:
The alternator's primary function is to maintain the battery's charge while the engine is running and to power the vehicle's electrical systems.
- Not a Quick Charger:
Alternators are not designed to rapidly recharge a deeply discharged battery.
- Gradual Charging:
The alternator provides a continuous, but relatively slow, trickle of electricity to the battery, keeping it topped off, but not designed to quickly bring a dead battery back to life.
- Alternatives for a Dead Battery:
If your C8 battery is completely dead, you'll likely need to use a battery charger or jump-start the vehicle to get it running and allow the alternator to start charging the battery.
- Low Voltage Issues:
Corvette C8s, like other Corvettes, can be sensitive to low voltage, so it's important to address a dead battery promptly.
Holiday Inn ……..
????
If you have access to a battery charger, not just a battery maintainer/trickle charger, connect it and follow the instructions that come with the charger. Some have an “ activation “ setting for completely discharged batteries for example. Check the battery voltage after charging and you should see somewhere around 12.8 volts with the engine off. If not there probably is an issue with the battery that charging isn’t going to help. Reconnect the battery, start the vehicle and drive it. You will find out before too long if the issue is fixed. If not go to Canadian Tire and get a new battery with posts in the same location and buy a “ Battery Tender “ and use it . If the frunk was open the light in there was probably on and if you have engine lighting option they would likely be on with the lid open. That would OBVIOUSLY drain the battery.
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I’m no expert but I did stay at a Holiday Inn Express last night…..
Most, if not all, GM cars have had battery run down protection for a decade at least
Just curious but how does that work ? Headlights turn themselves off as do interior lights after a predetermined time but I’m not sure about the frunk and trunk . Wouldn’t be hard to find out obviously but an interesting question for sure. By monitoring battery voltage level perhaps ?
The lights shut off after 5 (10?) minutes. So if you leave the trunk or a door open it won't drain your battery like it used to in the olden days.
Mr. Bean does...
My '22 voltage swings from ~12.4-5v to ~14.2-5v within a second or so. Dealer says this is normal. Is this normal?
On a trip from Sauble Beach to Exeter at night, it was steady at ~14.2 volts with the lights on. Voltage at the battery with a volt meter was slightly higher .
Hope the electronics are buffered well. Perhaps a pie filter on the voltage sensing wire of the regulator would smooth out the peaks and valleys.
Cheers, John
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I think you'll find that the controller, seeing the 14.5v, is turning charging off by limiting current to the brushes, and it drops the voltage to 12.5
Not sure what you're trying to do Mk but if it's changing your preferences, click up top right on your name and then on 'Preferences'. You might find what you're looking for there.
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