Charging a Battery with Tow Vehicle Using an Isolator

Updated 05/25/2016 | Published 05/17/2016

Products Featured in This Question

Starter Solenoid - SPST - 12 Volt - 100 Amp - Continuous Duty - Grounded

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$35.41

10 Gauge Wire - Blue Primary - Per Foot

(108)

$1.61

NOCO Genius Smart Battery Charger - AC to DC - 6V/12V - 5 Amp

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$69.82

Question:

Hello i will be running a #2 gauge wire from the battery to isolator in my suv to a 7 pin connector from bumper on suv to trailer to charge my batterys in my camper but what do i need from the 7 pin connector to batterys in camper? Charge battery with tow vehicle thanks sorry to be confusing

asked by: Nick

Expert Reply:

The largest gauge wire that a 7-way will be able to handle is 10 gauge like # 10-1-1. Once you install the isolator, this will give you a maintenance charge, it will not charge a dead battery.

To be able to fully charge the trailer battery from a discharged state you would have to use the NOCO Genius # 329-GENIUS5. This charger can be used to fully charge the battery and then you can maintain that charge with the vehicles charging system.

I have linked these items to this page for your convenience.

expert reply by: Jackie C