Current draw?
Thread Starter
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Joined: Feb 2018
Posts: 74
Likes: 10
From: Oakville Ontario
Current draw?
Hi Guys.
My battery is draining completely after a few weeks of sitting. New battery, BTW. C6Z
No alarm system and nothing is being left on.
1) Is this normal?
2) Does anyone know what the nominal current draw should be at rest? Ive ordered an ammeter.
Pls don't suggest a battery tender. I know that will help. I want to know if my car is functioning properly. I posted on FB forum and multiple replies to get a tender.
Really hoping for the expected current draw so I can test.
My battery is draining completely after a few weeks of sitting. New battery, BTW. C6Z
No alarm system and nothing is being left on.
1) Is this normal?
2) Does anyone know what the nominal current draw should be at rest? Ive ordered an ammeter.
Pls don't suggest a battery tender. I know that will help. I want to know if my car is functioning properly. I posted on FB forum and multiple replies to get a tender.
Really hoping for the expected current draw so I can test.
Race Director
Joined: Dec 2013
Posts: 12,502
Likes: 3,628
In sleep mode, car should be pulling less than an 1/5 amp from the battery at all time, but still enough to drain the battery in about three weeks, Hence the reason for the battery tender when the car is not going to be driving in a few days. As for say two weeks and the battery drained down that far, but the car will still start, then will take about 20 min of highway type driving until the battery is fully charged up again.
So it not only that the tender keeps the battery topped when not driving it, but the less drain downs and recharges of the battery allows the battery to last longer as well.
Hence when GM sells a re-labled Ctek 3300 battery tender as an option item, pretty much a dead give away that battery tender should be used on the car when it not being driven for more than three days or longer.
As for good battery not lasting a few weeks and dead when you go to start the car, then need to check the car for what module is not going into sleep mode when the car is shut down that is drawing excess power when the car should be in sleep mode.
So it not only that the tender keeps the battery topped when not driving it, but the less drain downs and recharges of the battery allows the battery to last longer as well.
Hence when GM sells a re-labled Ctek 3300 battery tender as an option item, pretty much a dead give away that battery tender should be used on the car when it not being driven for more than three days or longer.
As for good battery not lasting a few weeks and dead when you go to start the car, then need to check the car for what module is not going into sleep mode when the car is shut down that is drawing excess power when the car should be in sleep mode.
Race Director
Joined: Mar 2011
Posts: 13,262
Likes: 3,150
From: SW Florida
2021 C6 of the Year Finalist - Modified
Had the same problem as the OP on my 2011 GS
Here was the permanent FIX for me:
https://www.corvetteforum.com/forums...ead-again.html
Here was the permanent FIX for me:
https://www.corvetteforum.com/forums...ead-again.html
