Can a 12 Volt Battery on a Dump Trailer be Charged from a 7-Way Trailer Connector
Question:
How many amps can the 12 volt battery power lug handle. I have a dump trailer with a 12 volt battery in it to dump gravel. Can I use this lug to charge the battery while driving or will it keep blowing fuses?? The vehicle is a 2004 dodge diesel.
asked by: Terry B
Expert Reply:
The 12 volt circuit on most 7-Way trailer connectors is fused at 30 amps/12 volts. At best it can provide a maintenance charge to a trailer mounted battery. But it cannot charge up a battery; at least not one that is the size of the battery used to operate functions on a dump trailer. Most vehicle alternators are not strong enough and the tow package wiring not large enough for enough amperage to get back to the battery.
I recommend using an AC charger when you can to charge and recondition the battery on the trailer. Many of us here use charger # CTEK56353 and it works great! I have linked a video review for you.
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Products Referenced in This Question
CTEK MULTI US 7002 12-Volt Universal Battery Charger w/ Pulse Maintenance and Backup Power
- Battery Charger
- Battery Charger
- Car/Truck/SUV
- Motorcycle
- Trailer
- Lawn Mower
- Jet Ski
- 150 Ah
- Charges/Maintains
- 12V
- Wall Outlet to Vehicle Battery
- CTEK Power Inc
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Product Page this Question was Asked From
Adapter 7-Pole Round Pins To 4-Pole Flat
- Trailer Wiring
- Wiring Adapters
- Single-Function Adapter
- 7 Round - Round
- Plug Only
- 4 Flat
- Hopkins
more information >
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