bing tracking image
Summer Starts Here - Save up to 70%
SAVE NOW
Customer Service My Orders
Q & A Icon

Charging RV battery with 12-Volt Accessory Circuit from 7-Way Trailer Connector  

Question:

Do I need something separate from the existing wiring to charge the battery when it is hooked up

0

Expert Reply:

The 12-volt accessory circuit from the 7-way connector will provide a maintenance charge to the trailer mounted battery, but due to the small gauge of the wire, the distance away from the tow vehicle battery and the capabilities of the alternator, the circuit will lack the punch needed to charge a dead or partially discharged battery.

If the battery is dead or almost discharged, you'll need to use shore power and a battery charger like the CTEK # CTEK56353.

You could also keep the battery fully charged by using a DC to DC converter like # 331-BCDC1240D. This would use your tow vehicle's alternator to charge the RV battery while the tow vehicle is running.

expert reply by:
0
Mike L
Ask The Experts a Question >>

Products Referenced in This Question



Product Page this Question was Asked From


Featured Help Information

Instructions

Instructions for 331-BCDC1240DInstructions for CTEK56353Instructions for 90885

Miscellaneous Media

charge-trailer-battery-while-driving
How to Charge a Trailer Battery While Driving: 3 Common Problems (And How to Fix Them)
ctek-battery-charger-overview
Helpful FAQ
CTEK Multi US 3300 12-Volt Universal Battery Charger Review
CTEK Multi US 3300 12-Volt Universal Battery Charger Review - Video
Q & A Icon

Continue Researching

See More Q&A Expert Answers >>

^

Recently Viewed Products

About Us
photos and videos
1,056,204
Original Photos & Videos

Produced to make sure you know what you are getting and you get exactly what you need.

installations
35,570
Installations Completed

To make sure products work and fit the way they are supposed to.

etrailer call center
2,476,511
Phone Calls & Emails Answered

1,125,924 phone calls and 1,350,587 emails to help find the right solution.

etrailer training
400+
Average Hours of Product Training

We get to know our products firsthand so experts can better help you.

etrailer service
78
Years of Quality Customer Service

Assisting our neighbors and customers, face to face at the counter.

etrailer experts
193,357
Pages of Expert Information

Created to make sure you have all the answers to your questions, from real experts.

Order Information
My Orders Shipping Information ReturnsTerms of ServiceYour Account Login
About Us
Who We Are Careers
Customer Service
Contact Us Accessibility Help Call: 1-800-940-8924 About Us Help Videos and Articles Search Do not sell my Personal Information Privacy Policy
Bizrate Excellence Gold Shopper Approved Award
All images, layout and content copyright etrailer.com