Forum Discussion
kerrlakeRoo
May 03, 2018Explorer
Most vehicles charge very slowly, in part because the wiring is limited.
To see if you are getting anything check the batteries voltage 3 times.
Once with the trailer disconnected, voltage at the battery.
Second with the tow vehicle connected but not running
Third with the engine running.
Your first and second voltages should be the same, the third after the tow vehicle has been running a few minutes should show an increase. If so, yes its charging as you drive.
To see if you are getting anything check the batteries voltage 3 times.
Once with the trailer disconnected, voltage at the battery.
Second with the tow vehicle connected but not running
Third with the engine running.
Your first and second voltages should be the same, the third after the tow vehicle has been running a few minutes should show an increase. If so, yes its charging as you drive.
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