Rodney or anyone else: My CTEK 4.3 has arrived and I have a question. I installed it and it has cycled to stage #7 "Float". This is described as "Maintaining the battery voltage at maximum level by providing a constant voltage charge". I thought that providing a "constant voltage charge" would not be good for a battery and that a tender should just cycle to charge when needed. Guess I'm wrong on that?
The other question I have is if stage 7 does what it says, when would stage 8 ever be used? Sounds like stage 8 would operate the way I thought a battery maintainer would operate and "gives a pulse when necessary to keep the battery fully charged". I'm obviously missing something here.
Well, it looks like it is time to revive this old thread, and answer Boomer's question.Hey Boomer,
Differentiate between voltage and current. Constant current forced through the battery terminals would kill a battery (think of a trickle charger). Constant voltage of an appropriate magnitude between the battery terminals is good for the battery.
I think the documentation which came with the tender leaves so much to be desired. Frankly, I found it severely lacking.
I don't understand the differences between stage 7 and stage 8. In fact, in all of the months that I have had the tender, I have only seen it in stage 8 one time.
I will summarize it for you in three points:I need to copy and paste all this from post 54 into a word doc for safe keeping and late nite reading!
Other than GM dealers who else sells Delco batteries? I am having trouble finding an auto parts store in my area that sells them. I am going to check a couple GM dealers and see how much they want. What is a decent price for the Gold battery with a 42 month warranty? Thanks.Guess I am lucky I bought an ACDelco Gold Series battery and have never had to prove my battery was "dead enough". Battery has a 42 month free replacement warranty, and I have taken batteries in to the local parts store that sells them that were over 3 years old, and just told them that the battery is not holding a charge like it used to. All they did was check the date on the battery and gave me a new one.
Rodney, sorry about your battery experience. I am the same way and would not do business with them again. You said you didn't like the way they load tested the battery. Did you have a third party load test it? Perhaps if you did and got a fail, you could present this evidence to them for a warranty claim. My experience over the years is (1) Interstates are cheap batteries, which is why so many places sell them and (2) I have always had good experience with Sears DieHard gold series batteries. Had one for eight years in a ZR-1 that was on a float charger for 4 months a year. I only replaced it out of concern for its age.I will summarize it for you in three points:
1) The CTEK works.
2) Unless you scream and disrupt the store, don't expect to get your Interstate battery replaced under warranty.
3) I refused to scream; I refused to lose my temper; I refused to buy another new battery since the one I have now is only nine months old; the result is I still have a battery which is unreliable. But, hey, he will load test it again for me after I am stranded again.
No, I have not. I ran it through the recondition cycle on the CTEK MUS 4.3 Saturday night, and it made it okay through driving it on Sunday. I now plan on putting it on the regular tender cycle every night. That is a slight hassle, but not a big deal. So, I plan to just nurse it along with a tender every night until cold weather hits. When it is cold and the battery is a little bit older, I think it will have no problem falling on the other side of the line and failing his load test. I will then get my new replacement battery under warranty, and then move on after that.Did you have a third party load test it?
Thank you for the advice on the Sears DieHard, and the reference material url, which I have now read. Yes, there is a lot of good technical content there. Thank you for the link.I have always had good experience with Sears DieHard gold series batteries. Had one for eight years in a ZR-1 that was on a float charger for 4 months a year. I only replaced it out of concern for its age.
I know that as a diligent engineer, you have undoubtedly researched load testing, but I found an interesting primer on load testing here:. https://www.thoughtco.com/vehicle-battery-and-load-testing-4083840. I am sure there are more and better sources of info. --Bob
Realize this is an old thread but my experience is the same as Norm's. Just about everything in my garage with a battery is on a BT plus and has been for years without issue. Even my daily driver gets plugged in a few times a month. i have found it is allowing me go go many years between battery replacements. I was told that my Harley Davidson battery had a life span of 3-5 years max however i was able to go 7 plus before changing out the battery before a big trip. Wasn't having any issue with the battery but i just wanted to be sure rather than stuck in a hotel parking lot on the road.
what C7's power outlets can be used to charge it via cigarette lighter adapter?CTEK makes many models, some that would be suitable for both your Vette and your bikes. I have three, the factory C7 unit, a MUS 4.3 and a US 0.8.
They all work well. If you get a CTEK for your C7, you may want to also get the optional cig adapter for the factory trunk charging port.
No, it does not. That one is electronically disconnected when the car has been turned off for some time.what C7's power outlets can be used to charge it via cigarette lighter adapter?
the one next to gear leaver works for charging the car?
No, it does not. That one is electronically disconnected when the car has been turned off for some time.
The one to use is the one in the trunk on the passenger's side toward the rear of the car.
Rodney's answer is correct, but it's easy to make the interior sockets live all the time if you want to:
Welcome to our forum Croc. Our C7s are designed to have a maintainer/charger connected via the accessory outlet in the right rear of the car. This is the only "live" port when the car is turned off (the front port by the gear shift, is live only when the car is running, or you have it on accessory power, and even then, it will shut off after 10 minutes or when the driver door is opened). The rear accessory outlet is actually just several inches from where your battery is under the rear carpeting.
Sorry for your hospital stays- hope you are doing much better! I'd guess your 2014 OEM battery is toast. This may be of value in getting a new battery put in https://www.stingrayforums.com/forum/how-diy-guides/62705-redhot-gets-battery-her-upcoming-4th-birthday-4.html#post735601.Hi there guys. I wasn't just in the hospital for a little bit and when I tried to start my C7 it wouldn't crank. I was then in the hospital again before being able to hook the 3300 charger up to the car. When I got back it is now completely dead where I had to use the key to open the hatch. I then hooked up the 3300 charger. It is now been charging for over 24 hours and it is still dead where I can't even open the doors. Do I keep charging it or is my battery just gone? It's a 2014 and this is the original battery. Thanks for your help in advance.