can you store a car for 2 months without disconnecting the battery - Mercedes-Benz Forum
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#1 (permalink) Old 03-12-2007, 07:26 PM
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can you store a car for 2 months without disconnecting the battery

Hello,

I was just woundering. Assumming I have the a good battery fully charged (using a charger driving to storage. Can I store the vehical with the battery connected (2004 mercedes c240) for two months and expect to start the thing.


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#2 (permalink) Old 03-12-2007, 08:07 PM
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i kept my clk stored for 3 months without disconnecting the battery. i did make sure to start the car and let the engine run for 5 minutes every 2-3 weeks though.

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#3 (permalink) Old 03-12-2007, 08:11 PM
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On an old car I would always disconnect the battery. But I wouldn't have a clue what may happen to all the electronics on a modern car if they went without power. I would be careful and have another charged battery ready so if it didn't start after the storage you could quickly chuck it in. Or a starter pack.

Remember to disengage the parking brake as well. I had had this sieze completely on a 190 after a 2 week holiday and had to basically force the car to move until the brake disengaged with a big BANG!
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#4 (permalink) Old 03-12-2007, 08:12 PM
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I had 2 MB (ML320 and E320) cars sitting last year for 5 weeks with alarms on - without touching them.
Both of them started after with no problems. Batteries were 7 and 6 years old.
I think 2 months might be stretching if you want to use alarm. Get a battery maintainer.
In my motorhome storage I have no power, do I disconnect the cables for 4 to 6 months. So far the batteries never failed to start the engine after that period.
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#5 (permalink) Old 03-12-2007, 08:21 PM
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I don't do that so I don't know for sure, but I think I would buy one of the battery trickle chargers for that long a time. Griot's Garage has one that looks pretty good.

A technician told me that if a car is not being driven for an extended period of time, it is best to start it and let the engine get up to at least operating temperature about once a week.

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Last edited by Musikmann; 03-12-2007 at 08:24 PM.
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#6 (permalink) Old 03-12-2007, 11:28 PM
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Quote:
Originally Posted by Musikmann
A technician told me that if a car is not being driven for an extended period of time, it is best to start it and let the engine get up to at least operating temperature about once a week.
Operating temperatures? On diesel in cold temperatures often it takes 10-20 miles drive to get there.
I had my Detroit idling for 40 minutes at 75 F outside and it never reached 140F.
Farm/construction/emergency vehicles sit for 1/2 of the year with the "turn off the engine and climb out" technique.
Lot of them are 20-40 years old. Only the older tractors, that had vertical exhaust pipe require a coffee can on the top of it.

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#7 (permalink) Old 03-12-2007, 11:34 PM
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you can store it of course, but it will not start when you come back.
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#8 (permalink) Old 03-13-2007, 02:48 AM
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Quote:
Originally Posted by busoptr
you can store it of course, but it will not start when you come back.
Not necessarily true. Refer to previous posts. I've left cars sitting with batteries connected for a lot longer of a time than 2 weeks and the car started up fine.

My motorcycle can go about a month before it needs a charge to get it started again, with a lead-acid battery.
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#9 (permalink) Old 03-13-2007, 07:05 AM
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For the past six years I have left a 1996 S420 in my garage for five to six weeks when we go to Paris in the spring. I have never had a problem starting it upon return. I now have a 2003 S430 and will very soon be leving it for five weeks. A driver uses the car to drive us to and from the airport and I dont want him to fool with the battary. Should I be concerned about this car?
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#10 (permalink) Old 03-13-2007, 07:24 AM
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Quote:
Originally Posted by blau
Hello,

I was just woundering. Assumming I have the a good battery fully charged (using a charger driving to storage. Can I store the vehical with the battery connected (2004 mercedes c240) for two months and expect to start the thing.


blau

Blau; recommend you get a Trickle Charger to trickle charge your Battery, but since your going to a storage area that's probably not possible.
I can recommend a SOLAR Trickle Charger. Costs less than $50 in most places
Remember; a MB uses the battery 24 hours a day. It maintains your computer, clock, memorys etc.
Another possible option; if your up to it is to get a Battery Cut-Off Switch for your battery. Its a knife switch that will terminate juice eminating from the Battery.

My personal recommendation is get a Solar Trickle Charger.

Good Luck


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