Battery Tenders; Winter Storage
Hello all!
I'll start by saying that I've lived in MN my whole life and have stored cars in the past without any major issues. This year I am looking to get a battery tender for a couple cars, one being my recently purchased 370Z. Rather than pull the batteries and lug them inside I'd like to use a dual tender. I've never used one of these before and would like to know if the amps provided are enough to keep the cells from freezing. I had a brand new battery freeze and blow out on me last year and I'm not looking to have that happen again as they don't warranty batteries if they freeze unfortunately (not to mention the mess of acid all over the floor in the spring). Any other tips I should be aware of? Jackstands? Blocks? Leave car on the ground? Location: Central MN Temps: < -20 Degrees F at times. Car in question: 2010 40th Anniversary 51k miles 6MT |
Why would you live in Minnesota?
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And no, I do not live with my parents. But I didn't choose to be born here, and after college, I went where the job was, and that was..... here. |
As an Iowa Z owner, I will also be storing my Z for the winter. I was planning on getting this battery tender off of Amazon, and leaving it connected in my garage.
I'm also interested in some winter storage tips (I just bought the car back in April)! |
Im in NJ, im drivin this bad mofo alllll winter.
There might be RIP thread for me, please, only post the good things about me. P.S. Knock on wood. |
Go with the Battery Tender Plus, not the JRs. I have used them for decades on bikes cars & trucks all with fantastic results, although I have never had the freezing issue you have. I would give them a call @ 877-456-7901 & express your concerns. They may recommend a different model or another solution.
HTH |
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They make dual battery tenders. Only issue I foresee would be whether or not the cords will be long enough to reach both batteries without removing them from the cars. If you are not wanting to bring the batteries inside, I'd recommend buying a battery warmer for each one as well to prevent freezing.
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Search hibernate
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..or just get a hygrometer and confirm there's not much RH to begin with in the winter...
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too early to think about the 'W' word
And I used one last winter. Car fired right up in the Spring. |
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Edit: looked it up and a fully charged battery (SpG = 1.265) is good down to about -75F. At 75% charge (SpG = 1.22; 12.4V for conventional Pb-acid battery, 12.8 for maint-free), you can get down to -35F before freezing. |
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I think a battery exploding is really rare, and moreso a result of a defective battery than the cold. I've had my DD sit out in -20+ temps for a couple weeks with no issues. |
-40F is the standard operating temp for a car. there are many areas in canada that goes beyond colder.
now watch someone from north pole to one-up canada. |
Left mine stored with no tender last winter. (Battery still connected) I started the car up once every 3 weeks or so. No issues once we thawed out.
But I also had a new car. This winter I may just disconnect the battery. I don't think our temps in Illinois will be cold enough to worry about damaging it. |
Everyone has their own thoughts on it, but I'm of the belief that periodically starting and idling in the winter is worse than letting it sit for months. Without driving it'll never reach the full operating temps required to burn off moisture in the oil and exhaust. Last year I put my Z away first week of Nov. Hooked it to a battery maintainer and left it until end of March. She started right up.
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Past winter was the first storage for me, just put tender on, no removal.
Inflated tires to max psi, put some sheet rock pieces down with carpet on top and parked on that. For the heck of it put a sheet of plastic I had laying around under the car also. Containers with baking soda and those absorbing packets, also did sta-bil.. In MN also non heated but insulated garage. Zero problems in the spring after 6 mo , no starting during winter etc. Oh and covered it... |
ronrizz winter storage procedure and tips... Pull car into garage as usual. wash, wax, cover with jersey knit sheets. carpet under tires...um, no. battery tender...um, no. Massage therapist coming over once a month to rub on car....um, no.
wake up one fine spring morning, uncover car, open garage door, and drive off. Car no start??? take work beater to buy new battery. (2011 stock battery going strong) I love my car as much as the next guy, but it is a car..... |
Opinions are running the gamut. :)
For a newer vehicle with a good battery, RonRizz has the right idea, ie, not much is required. But, IMNSHO, it's not overkill to use a battery tender, crank it up every month or so (as long as you get it up to temp plus 5-10 minutes more), fuel stabilizer, &c. It may be just a car, but it's a nice car that deserves a little pampering. ;) YMMV |
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Plenty of good tips in here to try this winter. Battery tender is cheaper than a battery so I'll start with that. |
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