I can't even remember the number of times I've had to replace my battery in my '01. Basically, if I don't drive the car for 2-3 weeks (if I'm out of town or something), I'll come home and the battery will be completely dead. I try hooking it up to my battery charger, and it gives me an error message saying that there's in internal open or short. This battery must be only 3 months old!

Do you guys have similar problems, or is it just me? Did you do anything to fix it, other than leaving it attached to a trickle charger while I'm gone?

 

Is your battery AGM? If so are you using a charger intended for an AGM battery?
That doesn't solve your battery draining issue. For that do a search using Google for "C5 Corvette forum parasitic battery drain"

 

A helpful contributor , of great skill, went by the handle dadaroo, cautioned me to use care when charging . THe danger is the wave forms generated by some of the old chargers will damage the computer if they reach it. I pass the info to you, in case it helps.

I always disconnect the battery from the car's leads when charging, which was good because I was using a charger I bought 40 years ago (not chinese) . I continue the same practice, but have purchased one of the softer waveform chargers (that can be purchased with a corvette logo) in preparation for a gel battery, and to use the de-sulfuring feature on my present battery.

 

1. Buy a trickle charger, or a least a cheap-o disconnect for when you're not driving.

2. New chargers won't start charging a totally dead battery. While there is obviously another problem somewhere as a normal battery would not go dead in two weeks, the new chargers need to sense something in order to begin charging.

What you would have to do is essentially jump the battery so that the charger seems some kind of voltage and will begin charging after that.

 

It would be helpful if you were a little more specific.

How many batteries have you actually replaced, over what period of time?

What make and model battery's have you used in the past and are currently using?

What make and model charger are you using?

Where do you live and what temperatures does your battery see when it sits?

Good luck... GUSTO

 

This guy was able to remove his old battery just with his hands. It doesn't seem too difficult.

 

Man C7 guys still bumping years old C5 threads lol

 

I would buy a trickle charger made by "Shumacher", because they are in the battery charger business. I'v bought one before B&D didn't last no time. I've a battery charger on wheels , made by Shumacher well over 30 years . And its still doing the job it was intended for. So I bought a Shumacher battery tender about 5 years ago, and it's still doing what i bought for. NO complaints here

 

U have a power draw find it ...I leave mine for months on end without a start and it’s all good ....my guess ur radio is sucking the juice out .

 

Your car has excessive sleep mode current draw, the best way to prove this is to place a DMM configured to measure current and select the 10 amp current range and place it is series with the negative battery cable and negative battery terminal. Sleep mode current should be around 25ma. There are many causes of excessive current draw, here are a few, power seat switches or seat modules, interior lights staying on, Bose amplifiers staying on, headlight control module, rear window defroster, shorted diode in alternator.

 

So the reason why is stated the car always is churning out some signal to detect its key fob ....if u reprogram this signal feature to turn off after a certain use of battery life it totally stops the car from draining and natural battery depletion starts to happens anyways for long extended periods of time ...U can delays the time in which the frequency kicks off run it in your own timer setting...so for example if mine sits for a week and over without the doors being opened it will shut off FOB detectors frequency sensors for that just and u do need to hold the lock /unlock 10 seconds or so to reprogram each time it goes into storage mode .....the fob really beacomes like your re activation switch wake up switch however I like to refer to it if the setting are programmed right and wallah no more battery issues well at least u could prob get a year out of it maybe a little more and have something left to crank it over after the sit ...repeated experiences even in sub -30 below weather for months come spring it will fire like the day u put it away ....


I even use the cigarette lighter time to time and still got plenty of juice through the cold winter months don’t get why u guys have so much battery parasitic issues oh wait I do get it ....because u guys ain’t disabling some of your features or don’t know to ...

 

I am thinking the OP has probably corrected the problem as this thread is 3 years old.

 

Maybe or he has a pile of cores to bring back !

 

Speedy007 - How do you reprogram the signal feature to turn off after a certain use of battery life?

 

[QUOTE=Sailon;1602557629]Speedy007 - How do you reprogram the signal feature to turn off after a certain use of battery life?

Custom os that supports your clusters interface in full function. FOB time out limits max values min values can be adjust in source code if your feeling a little geeky.....

 

Speedy007 - Interesting. Thanks!

 

A word from the wise the ABS fixer told me do not charge the battery with a negative cable hooked up as you're looking for trouble light killing the IC chip on the electronic brake control module if it gets hit by lightning or a surge

 

You have piqued my curiosity. How do you charge the battery with only the positive lead from the charger connected to the battery?

 

 

That's easy just have a spare battery Bolt and put it in the negative terminal and you have your connection or put a quick shut off on there so you can actually hook the battery charger to the battery and not the car itself