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How to Charge a Trailer Battery

Question:

Will this battery charger also charge a 12v Vehicle battery mounted in my trailer box for running accessories. along with my trailer brake battery. thanks

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Expert Reply:

The Tekonsha Push to Test Breakaway Kit # 50-85-313 that you referenced is designed to charge a breakaway battery. It would not charge your trailer battery that you use for accessories.

To put a maintenance charge on your trailer battery that runs accessories you would need to run a wire from the 12 volt accessory circuit of your trailer connector to the positive post of the trailer battery. This won't charge a dead battery though, it will just help keep a charged battery topped off.

To charge a dead trailer battery you would need a charger like the CTEK 3300 Battery Charger part # CTEK56353 that plugs into a wall outlet.

I attached a review video plus an FAQ on breakaway systems.

expert reply by:
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Jameson C

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