sensitive battery?
Thread Starter
Burning Brakes
Joined: Dec 2005
Posts: 1,114
Likes: 356
2020 C3 of the Year Winner- Unmodified
sensitive battery?
Since I am new to the Z06, I am asking if the battery drain is more than other modern cars? I made the mistake of having my detailer leave the doors and frunk open for an extended time without plugging in the tender. I wok up this morning and the lights were flickering and car would not start. so I plugged in the tender and left it. Though it was not left over night with lights on. there was a time with the car on but not started and the battery was drained to a point it would not start. Other cars ive owned were not this sensitive..
Wondering
Wondering
Racer
Joined: Feb 2024
Posts: 423
Likes: 374
Since I am new to the Z06, I am asking if the battery drain is more than other modern cars? I made the mistake of having my detailer leave the doors and frunk open for an extended time without plugging in the tender. I wok up this morning and the lights were flickering and car would not start. so I plugged in the tender and left it. Though it was not left over night with lights on. there was a time with the car on but not started and the battery was drained to a point it would not start. Other cars ive owned were not this sensitive..
Wondering
Wondering
I do think the battery drains more with things left open tho. Just speculating as I haven’t tested it.
My car came from the factory with a bad battery that would barely stay alive even with a tender. I swapped it out and haven’t had any more battery charge issues.
Drifting
Joined: Nov 2023
Posts: 1,680
Likes: 1,279
Since I am new to the Z06, I am asking if the battery drain is more than other modern cars? I made the mistake of having my detailer leave the doors and frunk open for an extended time without plugging in the tender. I wok up this morning and the lights were flickering and car would not start. so I plugged in the tender and left it. Though it was not left over night with lights on. there was a time with the car on but not started and the battery was drained to a point it would not start. Other cars ive owned were not this sensitive..
Wondering
Wondering
I find interesting that I leave my car on the “official” tender, which reads “battery fully charged” when I disconnect and take the car out. Drive the car for an hour or so during the day, so no headlights. Return home and put the tender back on and it’s reading that the battery is taking a charge?
I don’t understand why a fully charged battery, that was used to start the car once for a 60 minute drive, that included highway speeds, needs additional charging post drive?
Racer
Joined: Nov 2008
Posts: 310
Likes: 24
From: Minnesota
If it’s not allowed to power down completely, doors left open etc I would say there is more electronic stuff awake than any of my other cars…
I find interesting that I leave my car on the “official” tender, which reads “battery fully charged” when I disconnect and take the car out. Drive the car for an hour or so during the day, so no headlights. Return home and put the tender back on and it’s reading that the battery is taking a charge?
I don’t understand why a fully charged battery, that was used to start the car once for a 60 minute drive, that included highway speeds, needs additional charging post drive?
I find interesting that I leave my car on the “official” tender, which reads “battery fully charged” when I disconnect and take the car out. Drive the car for an hour or so during the day, so no headlights. Return home and put the tender back on and it’s reading that the battery is taking a charge?
I don’t understand why a fully charged battery, that was used to start the car once for a 60 minute drive, that included highway speeds, needs additional charging post drive?
Advanced
Joined: Sep 2000
Posts: 51
Likes: 15
From: Philly area
If it’s not allowed to power down completely, doors left open etc I would say there is more electronic stuff awake than any of my other cars…
I find interesting that I leave my car on the “official” tender, which reads “battery fully charged” when I disconnect and take the car out. Drive the car for an hour or so during the day, so no headlights. Return home and put the tender back on and it’s reading that the battery is taking a charge?
I don’t understand why a fully charged battery, that was used to start the car once for a 60 minute drive, that included highway speeds, needs additional charging post drive?
I find interesting that I leave my car on the “official” tender, which reads “battery fully charged” when I disconnect and take the car out. Drive the car for an hour or so during the day, so no headlights. Return home and put the tender back on and it’s reading that the battery is taking a charge?
I don’t understand why a fully charged battery, that was used to start the car once for a 60 minute drive, that included highway speeds, needs additional charging post drive?
Drifting
Joined: Nov 2023
Posts: 1,680
Likes: 1,279
Since I am new to the Z06, I am asking if the battery drain is more than other modern cars? I made the mistake of having my detailer leave the doors and frunk open for an extended time without plugging in the tender. I wok up this morning and the lights were flickering and car would not start. so I plugged in the tender and left it. Though it was not left over night with lights on. there was a time with the car on but not started and the battery was drained to a point it would not start. Other cars ive owned were not this sensitive..
Wondering
Wondering
Most new vehicles are like this. They have so much tech. So many computers, networks, external connections that use the battery… every C8 has its own LTE cellular connection and is constantly trying to “phone home” and transfer data to GM HQ, where you go, when, at what speed, how hard you braked, if you had the window down, when you put the window down, vehicle temperature, transmission temperature, tire pressure, and millions more “data points” are constantly being transmitted. All GM cars do this now although the car is supposed to have a “low power” mode to transmit data when the car isn’t running (and battery not charging).
Drifting
Joined: Nov 2023
Posts: 1,680
Likes: 1,279
I agree with above but it seems to take some time for the tender to go from level 1 to level 3 (fully charged). I have never measured how long it takes but it’s not instant or even five minutes so the battery is taking a charge when I don’t think it should need to… it’s just an observation…
Drifting
Joined: Nov 2023
Posts: 1,680
Likes: 1,279
I was of the understanding batteries should remain fully charged for maximum life and reliability. Especially if you live in the north where cold temperatures reduce battery power… the above would indicate a car might not start in freezing conditions where a fully charged battery may work.
My Z06 is averaging 12.5 MPG… apparently it’s not improving my fuel economy…
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Thread Starter
Burning Brakes
Joined: Dec 2005
Posts: 1,114
Likes: 356
2020 C3 of the Year Winner- Unmodified
Thanks for all the
comments
the tender kept going to red. I said screw it and purchased a battery. I do not need to get stranded because I was trying to revive a dead battery.
comments
the tender kept going to red. I said screw it and purchased a battery. I do not need to get stranded because I was trying to revive a dead battery.
Burning Brakes
Joined: Aug 2000
Posts: 1,063
Likes: 79
From: West Chester PA
Not scientific data, but my car doesn't like anything but a full charge. Even if it starts, other electric gremlins show up if I don't keep it on the tender. Things like the radio freezing on one channel.
Thread Starter
Burning Brakes
Joined: Dec 2005
Posts: 1,114
Likes: 356
2020 C3 of the Year Winner- Unmodified
I changed the battery yesterday and that was probably the easiest battery change that I’ve done for at least 15 years. There are some advantages to purchasing an American car versus a European car.
Safety Car
Joined: Jun 2008
Posts: 3,806
Likes: 5,869
That and they aren’t really chargers. They are more like battery maintainers that go thru different cycles. It’s not like charging a phone where it just charges to 100% and holds it there.
