Battery Cut Off Switch
03-05-2012, 01:17 PM
#2
Racer
Join Date: Oct 2009
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Once you disconect the battary All your drive readyness will be wipe out.....Just get a battery tender so the battary stay full charge between use,this way,you will almost double the battary life.
03-05-2012, 02:17 PM
#4
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I rent a garage that does not have electrical outlet. I remember that on a previous 993 I owned, the only problem was the loss of the Radio Code. If the car is driven often enough, the only thing required would be to remove the battery for Winter Charging and re-install the battery in the Spring.
03-05-2012, 04:31 PM
#5
Rennlist Member
Jef,
If that garage is your only choice for spring, summer and fall driving, then the cutoff switch is the only option. Your 993 can sit for as long as two weeks with the electrical bus hot and not have to worry about a no start - that assumes you have a strong battery to begin with.
If it's going to sit more than two weeks you should pull use the disconnect switch. As an FYI, I've disconnected the battery many times in the ten years I've owned my car and never noticed any drive problems as a result.
Good luck.... maybe you can find a nice neighhbor and buy a long extension cord!
If that garage is your only choice for spring, summer and fall driving, then the cutoff switch is the only option. Your 993 can sit for as long as two weeks with the electrical bus hot and not have to worry about a no start - that assumes you have a strong battery to begin with.
If it's going to sit more than two weeks you should pull use the disconnect switch. As an FYI, I've disconnected the battery many times in the ten years I've owned my car and never noticed any drive problems as a result.
Good luck.... maybe you can find a nice neighhbor and buy a long extension cord!
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03-06-2012, 11:53 AM
#8
Rennlist Member
You may lose your...
OBD II readiness codes. Then you will have to do a prescribed drive cycle to have the ECU reset itself.
I have had several battery problems lately resulting in a dead battery. All 5 of my readiness codes need resetting. I have done four (4) drive cycles and not one has re-set.
In both cases, for one reason or another, I did not have my battery tender connected, the car was in a shop, etc.
I have had several battery problems lately resulting in a dead battery. All 5 of my readiness codes need resetting. I have done four (4) drive cycles and not one has re-set.
In both cases, for one reason or another, I did not have my battery tender connected, the car was in a shop, etc.
03-06-2012, 10:27 PM
#9
Three Wheelin'
Depending upon where you live the readiness codes may or may not be an issue. If you live where the smog regs don't require a regular OBD II system check the rediness codes will be of little importance to you. If you're in a state like CA where you need to smog the car every other year and they check the codes then the codes will be an issue, but only when you go in for a smog test. The codes can be reset but it either costs some $$ (the dealer or a good wrench does it) or you'll need to fuss with it yourself by strictly following a driving routine. Either way it sounds like you won't have much choice as a fully dead battery will kill the codes too.
To answer your question I've used a simple quick disconnect that can be bought at any number of McParts or catalogue sources. They're simple, easy to install right on the battery post, and since this sounds like a seasonal thing I don't think you'll need much more than that.
To answer your question I've used a simple quick disconnect that can be bought at any number of McParts or catalogue sources. They're simple, easy to install right on the battery post, and since this sounds like a seasonal thing I don't think you'll need much more than that.
03-06-2012, 10:48 PM
#10
Rennlist Member
2 Many Cars...
is right on the money. I am in Cali...had several dead batteries in sequence...my reediness codes are all turned off. I have done numerous drive cycles, still no reset. Big pain in the butt.
My guys can force 2 of the 5 or 6 codes...you need 3 codes on, as a minimum, to pass.
My guys can force 2 of the 5 or 6 codes...you need 3 codes on, as a minimum, to pass.
03-07-2012, 01:28 PM
#11
Rennlist Member
---Good to know about the idle. I was wondering why that was suddenly occurring. And now that I think about it, only occurs after using the disconnect. And corrects itself after about 3-4 minutes.
re: type of disconnect. I purchased one from Pelican. PEL-GE-BCOS-01
