Quote:
Originally Posted by adon30
That is the whole point of a 4 wire measurement. To have both measure and sense wires as close to the point requiring measurement as possible. This is what we use for high accuracy tests of aerospace products. I'm not categorically saying that this is the exact purpose the extra lead was added for but this is the principle of the measurement technique.
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Yes, it will be to reduce voltage drop errors in the cable which shouldn't be too great when charging but would if you cycled them.