Tim from Alabama
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Joined: 04/07/2006
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gheicher wrote:LewMichele&Paws wrote:I usually stay hitched after leveling and pulling the umbilical cord. Once or twice I have unhitched to drive to a restaurant.
Many connector cords do not disconnect the TT battery charging circuit when the TV ignition switch is off. If you are using 12 volt power or your TT battery is not too good, you run the risk of your TV not starting the next day if you don't pull the "umbilical cord". I don't always unhook but do disconnect the plug just in case. The only thing about this is, on today's models of vehicles, almost all of them have the run dead feature on the battery system. This allows you to pull power, but still keep from running the battery down.
If it's working right and all the circuitry under the hood and dash are done correct and not spliced here and there, it should keep you from draining the battery.
Mine will shut off the power draw when my cranking battery gets down to under 12volts and will not supply power from the plugin at all until I crank the truck or charge the battery. And, since modern batteries all have reserve cranking capacity, that usually means that in less than 2% of new vehicles will you run it down enough that it will not start the vehicle.
If it's an older model, somewhere later than 1995, you can install a battery saver device to keep this from happening. It will not allow you to run the battery down beyond a certain voltage. And, it's not very expensive and could be a great item to add for safety against running your cranking battery down so it won't crank your vehicle.
Just had to add my 2 cents worth, minus taxes to this post, not argue about it being not completely correct. Just helping.
Tim
If I don't meet your expectations
Maybe you should lower your standards.
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Tim from Alabama
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Joined: 04/07/2006
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OH, I also remember someone mentioning finding a battery saver somewhere that they use in their rv line to keep from running the rv batteries down too low to damage them. I cannot find where it was or anything else, but, this could also be a help if you are worried about running down your batteries too low as to damage them and not allow them to run too low. I think the voltage or amperage or whatever was set to not allow the battery/s run below, like 40% or something like that. Could be an idea to save you from damaging your rv batteries by keeping THEM from being run too low, also. If I could just find it or someone else can find it and supply a link.
Sorry, not trying to hijack this thread, but, it could also save people from some troubles they don't think about when they stay hooked up or unhook even for a single night and not think about just how much power they are actually using.
Tim
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agesilaus
North Florida
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Joined: 05/06/2008
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Same here we leave it hitched, drop the rear jacks, disconnect the umbilical and save some time in the morning. After reading some of the posts above I think I'll start lowering the jack too.
BK
04 Trail Manor 2619
08 Ford F150 5.4L TV
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Let's Go Exploring
Park Ridge, Illinois USA
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Joined: 04/24/2004
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Have done it both ways. As long as we can get the TT level and we're not going anywhere, we'll usually leave it hitched.
April & Tom (and son Brian when he is home from college!)
2004 Jayco JayFlight 29FBS TT
2006 Ford F350 Lariat 4X4 Crew Cab w/ V10 Engine, 4:30 LS & Tow Command
30 Years and counting camping in tents, an '85 Jayco J pop-up and now a TT! 
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