High Voltage drop to slide motor

RJsfishin wrote:
I thought the subject was voltage reading under load at the motor,.......a whole bunch different than battery voltage !

Is the voltage drop different at the load from at the battery? I can see how the voltages might be slightly different to start with although no current is flowing, ? but then would each end not drop by the same amount with current flowing?

One guy can't be in two places at once, so OP does not give voltage drop at the battery or what the motor voltage was before running it.

Another thing is that the voltage sag at the battery (and the motor) also depends on the battery bank--more AH less sag, and less sag with 12v vs 6v and even less with AGMs. So it is not just the wiring.

OP said:
"When checking voltage at the motor with existing wire that goes all around the trailer to the switch and back. It showed 10.85 volts. More than 2 volt drop in the wires.
The battery voltage stayed the same.
Then I checked with booster cable #6 or 8, cheap kind 6' long
12.46volts !!!

13.0v at battery
10.85v at motor existing wire
12.45v at motor booster cable"

I don't see how the battery voltage could have stayed the same.