DIY Japanese Toolbox
Only $1 if you don't assume your time has value. For the amount of time it takes (and questionable safety of using a lug like this), you'd be better off buying them. This is a very creative solution, but please don't use this for any electrical purposes.
I work with these every day, and no, they are not the same. If you want to do this in your own garage, that's fine by me, but suggesting that these are equivalent is irresponsible, ignorant, or both.
In a 12v car battery, low voltage isn't the concern, it's the massive current the battery can supply, coupled with the inconsistent resistance provided by these makeshift lugs. I'm all for suitable replacements when the manufacturer's replacements are grossly overpriced, but I really don't believe this is the answer for that. If you can save $8 and you only need a couple, bite the bullet and spend the extra cash. If you need a lot of these in your day-to-day work, the I hope your only doing repairs like this on your own property, because there's a reason these lugs are built the way they are. Take that $8 each you're not spending on proper lugs, and save it. You might need it when your car insurance refuses your claim, hehe.
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