Automotive

Do I need to buy a dedicated side-terminal battery ratcheting wrench?

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  • Nov 4th, 2017 4:36 pm
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Deal Guru
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Mar 14, 2005
11755 posts
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City of Vancouver

Do I need to buy a dedicated side-terminal battery ratcheting wrench?

My friend put in a new car battery for me this summer and used some type of regular wrench. When my GM car wouldn't start due to no electrical, my sibling said the battery terminals were all loose. Do I need to buy a 5/16" GM battery terminal ratcheting box wrench for next time -- it's like twenty bucks? Is it 'cuz the engine vibrations loosen stuff, and that's why I need a ratcheting wrench?
3 replies
Deal Guru
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Feb 24, 2007
12320 posts
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There are many aftermarket places one can buy tools. Princess Auto?? Used tools?
Deal Addict
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Jul 5, 2011
1101 posts
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Toronto
I always kept a tiny 10 MM wrench in my glovebox in my older car... good for lots of things.

For $20 you could buy a whole set of crappy wrenches from CDN Tire or Princess Auto.
2013 Wins - $1320 - Woohoo!
Deal Guru
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Jun 12, 2007
12748 posts
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London
Once it's tight, it shouldn't come loose

Any 5/16" 6 point box wrench or a 6 point socket (1/4 drive) will work. Avoid flat wrenches or 12 point ones as they can round the nut edges

Wrap it in tape to prevent it from shorting out.
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