Can I crimp two 4ga wires in a single lug?

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May 4, 2008
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I have a good hydraulic crimper, I'm trying to see if I can safely crimp two 4 ga wires in a battery lug, I don't have room to stack 2 terminals. If so, what size lug would work giving a proper crimp?

Lug similar to this...

Screenshot_20250505_100010_Google.webp
 
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You'll need to check what the terminal end is rated for. The manufacturers documentation will tell you what you can and can't do.
 
Not at the moment. The battery terminal is flush with the top of battery so stacking won't work, neither would them being somewhat splayed at about 45 deg, need to be inline. There are a few options especially since I only have about 1 inch of new wire to work with. Definitely want to crimp and not use a screw down distribution block for this application despite their simplicity.
 
In theory if you could twist them evenly, you could size a crimp lug for the total cross sectional area. The goodness of the crimp and the quality of the job would be suspect though because of the difficulty of combining the two wires and controlling strain. They would need to run parallel probably 20 diameters before the twist to be ok, and taped or wrapped to that point.

If probably look to use a heavier gauge feeder and then a terminal block or some other type of splice elsewhere.
 
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