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Old 07-05-2015, 04:10 PM   #1
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Charging Batteries From Truck?

If my Truck has a 120 volt plug can I just plug my TT into it like a generator and charge the batteries or run the AC if I needed to? Thanks
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Old 07-05-2015, 04:39 PM   #2
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Quote:
Originally Posted by 1973nader View Post
If my Truck has a 120 volt plug can I just plug my TT into it like a generator and charge the batteries or run the AC if I needed to? Thanks
There are several members on this site that are more knowledgeable than I and will have more specifics, but I'll start... It depends:

What is the source and current output of your 120 volt power?
Does your truck have a generator (or inverter generator) running?
Do you have an inverter connected to your truck's 12v dc system?

In general, unless you have a generator (or inverter generator) running, you will not have enough power to run your TT AC.

An inverter connected to your truck's 12v dc system might be able to power a battery charger (or maybe your TT converter) to charge your TT battery.

Those are the generalities. The 'devil is in the details' regarding your 120v power source.
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Old 07-05-2015, 04:44 PM   #3
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It's a 2014 Titan and it's just the 120 plug in the back seat area so I don't really know what the specifics are. I will have to look in the manual. Thanks
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Old 07-05-2015, 04:47 PM   #4
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In simple terms. What you need to know is how much power (Watts) your trucks 120 volt plug is rated to (supply)handle. Then you need to know what the power (Watts) is of the load you intend to use As long as the load is less that the supply you should be ok.
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Old 07-05-2015, 04:53 PM   #5
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Thanks
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Old 07-05-2015, 04:57 PM   #6
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I doubt that you have enough power to run the TT A/C unit but you may have enough to run a charger. Your manual should give you the power output for that plug
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Old 07-05-2015, 05:17 PM   #7
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Your manual should tell you how many watts the trucks 120V outlet is capable of. I would be very surprised if it is more than 100 watts. If that is the case you do not want to plug the TT into it.
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Old 07-05-2015, 05:58 PM   #8
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To echo what was said and add some tech talk. If your truck 12VDC to 120VAC inverter in the back seat of your truck has a high enough wattage output, you may very well be able to run a battery charger for your trailer. If its big enough and the wattage and amp draw is high enough, you would be able to run your TT AC.

However, without looking into the specs on your truck. I am sure it is not designed for that type of power output. Common sense tells me its designed to sustain a laptop plug in or small video player. Also, it is most likely designed to be utilized while the truck engine is running.

However, for more information, you can be absolutely assured, that if you could run a battery charger or your trailers AC off the a converter such as in your truck; it will not be for long. Your truck battery will be drained quickly.

Most battery DC to AC converters are not designed for large draw equipment or long term draw usage.

Another point to take though is usually, while you are plugged in and towing your TT, the batterie(s) is being charged through the TT's converter by the TV's charging system. If you are in a situation where you need to get a charge into your TT while camping, you can connect your TT to your TV utilizing the plug you hook up with while towing and with your vehicle running, give your TT a slow charge.

I hope this helps.
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Old 07-05-2015, 06:04 PM   #9
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Thank you for the info
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Old 07-05-2015, 07:32 PM   #10
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The only stats that I could find were on the Ford in truck inverter is that it is 150 watts, which is close to 12Amps. Then take into consideration the voltage drop on the 25' extension cord which is probably not going to be 12 AWG cable, and you are not going to get much out of it. Probably equal to the TV's output using the TT's connecting cable. Running the in truck inverter at or over its max will portably blow the fuse or heat it up and kill the inverter.

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