I have used this cable to connect (with a manual switch) my RV's house battery to my RV's engine battery to charge the house battery with my engine AND potentially start the engine battery when needed. It suits my purpose well. The cable works very well, although be aware that it's copper-aluminum (saves a lot of money for the same copper conductor), so if you want ONLY copper wire, that's not the case. It's incredibly flexible and makes a great low-loss patch cord.
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