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Can a Trailer Battery be Charged from the Trailer Connector on a Truck  

Question:

Can I charge my tent trailer battery from my truck battery at home? How and how long?

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Expert Reply:

The tow package wiring on a vehicle can be used to charge up a small break away system battery but on a larger battery it can only provide a maintenance charge and will not charge up the battery. This is because the wire is not large enough and the alternator on most vehicles cannot push back the amperage required to charge a trailer mounted battery.

The best solution to charge the battery at home would be to use an AC charger such as # CTEK56353. This charger not only charges a battery but also reconditions it. Several of us here use this charger for various applications and it works beautifully. I highly recommend it.

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Michael H
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CTEK Multi US 7002 12-Volt Universal Battery Charger Review
CTEK Multi US 7002 12-Volt Universal Battery Charger Review - Video
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