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Go Back   REVscene Automotive Forum > Technical Discussion > Maintenance, Engine & Driveline Tech

Maintenance, Engine & Driveline Tech This forum is brought to you by The Speed Syndicate (TSS) in Burnaby.
Discussion of maintaining your engine, transmission, differentails, rear ends, and mods associated with "driveline" parts..

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Old 01-21-2012, 12:28 PM   #1
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Battery Discharged after storage

So I had my car parked in the garage since September but when I tried to start it, it won't crank. I took the battery to Canadian tire who tested it and said it's gone bad.

Question is, should I try to charge it before doing a warranty exchange at Costco?

The battery still has 40% of the 100 month warranty remaining so I'd get like $25 back. But if the battery can be resurrected, I'd rather continue using it as I'd need to fork up extra $50 for a warranty replacement.
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Old 01-21-2012, 12:50 PM   #2
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You could get a 'battery tender' or similar product to charge the battery back to full capacity.
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Old 01-21-2012, 01:14 PM   #3
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Quote:
Originally Posted by matrixfwd View Post
So I had my car parked in the garage since September but when I tried to start it, it won't crank. I took the battery to Canadian tire who tested it and said it's gone bad.

Question is, should I try to charge it before doing a warranty exchange at Costco?

The battery still has 40% of the 100 month warranty remaining so I'd get like $25 back. But if the battery can be resurrected, I'd rather continue using it as I'd need to fork up extra $50 for a warranty replacement.
Try charging it first. I've had CT tell me battery was bad when it wasn't.
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Old 01-21-2012, 02:37 PM   #4
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Not always.. it depends what's wrong with it.. eg if it is out of electrolyte or busted cells..

Battery Tender only desuphalate the battery, but it dry out the battery when doing that.

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You could get a 'battery tender' or similar product to charge the battery back to full capacity.
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Old 01-21-2012, 07:05 PM   #5
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my battery died also, should we get a battery charger or something? or just jump start it?
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Old 01-21-2012, 08:32 PM   #6
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is this a good enough charger? MotoMaster Automatic 10/2A Battery Charger | Canadian Tire

i am thinking of getting this thing to charge up my battery till its out of storage in spring time, i have never used a charger before but im guessing its the same thing as a battery "tender" as the guy said in the second post??

would be so much easier to charge the battery instead of jump starting it and then letting the car run for 30 minutes to charge the battery up
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Old 01-21-2012, 09:18 PM   #7
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The problem is if you run the battery too low, the battery chemistry just won't accept the amount of power especially at low amps from a battery charger you are feeding it. It really depends on how far the equilibrium point of the battery electrolyte had changed.

With some marginal battery.. even if you jump start and say drive the car from YVR to Hope and back.. The battery will hold the charge during the car is on, but the battery will still discharge itself after a few days because the battery chemistry can only store the power for a while, after that the equilibrium falls back.

Honestly it is a payoff issue.. a new battery is about $100 (even an OE Varta one for a BMW).. a charger is about $30-$75.. with the question of the status of each battery cell and the age of the battery is unknown.. sometimes it is just cheaper and easier to get a new battery.

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is this a good enough charger? MotoMaster Automatic 10/2A Battery Charger | Canadian Tire

i am thinking of getting this thing to charge up my battery till its out of storage in spring time, i have never used a charger before but im guessing its the same thing as a battery "tender" as the guy said in the second post??

would be so much easier to charge the battery instead of jump starting it and then letting the car run for 30 minutes to charge the battery up
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Old 01-21-2012, 09:22 PM   #8
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Among what CT sells only CTek one has the desulfate function

Benefits | CTEK Battery Chargers

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Originally Posted by gretzky View Post
is this a good enough charger? MotoMaster Automatic 10/2A Battery Charger | Canadian Tire

i am thinking of getting this thing to charge up my battery till its out of storage in spring time, i have never used a charger before but im guessing its the same thing as a battery "tender" as the guy said in the second post??

would be so much easier to charge the battery instead of jump starting it and then letting the car run for 30 minutes to charge the battery up
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