Battery Life?

Yes with a single battery in good shape you should last one night without much trouble. Very easy if the lights are LED. If you run one night light you still be fine especially if it is an LED. Although probably not needed in a city parking lot if you leave a blind open a bit.

prichardson wrote:
What size battery? Can you turn off the dew point heater on the fridge? If the first question is Grp. 24 and second is no then 1 maybe 2 nights. If you can turn off the fridge heater and minimize the number of lights then 2 to 3.
Increase the battery size and time will be longer.

The OP is a newbie and won't have any idea what you mean by "dew point heater on the fridge". Explanation - many gas absorption fridges will have a 12 vdc heating element located in the area between the fridge and freezer sections that's intended to help reduce the build up of condensation when it's really humid. When on shore power leaving this heating element powered is obviously a non-issue but when running on battery power it's unnecessarily drawing down your precious battery reserve. Obviously under those circumstances you want to turn it off, the problem being that in recent years fridge manufacturers have deleted the switch necessary for this purpose. Unfortunately the OP hasn't provided any information as to which trailer his has nor which fridge, for if we knew we could probably tell him whether he has a heating element that can't be turned off. We could also further advise him how to install his own switch so he can disable this heating element, as necessary. Until the OP offers more pertinent information as to just which battery he has, details his intended use, and offers specifics about his trailer it would be impossible for anyone to offer any reasonable answer to his original question. :R

How long does I can of pop last? As long a it takes you to drink it.

It is the same with your battery. It's life depends on your use.

Our TT with it's original battery will last us two or three days if, we turn off the antenna preamp, switch the frig and water heater to propane after we changed to LED lights. We know the voltage is low when the water pump will not build enough pressure to shut itself off. The water pump is our biggest current draw.

Left in the yard the phantom loads will drain our battery in about a week or so. When we expect to Boonedock for a few days we carry an extra battery in and old picnic cooler. I have managed to stay an extra day or two by charging the battery with a set of jumper cable of the truck. It is kind of a crude approach but work if necessary.

If you intend to Boonedock you gear up for it.

We have a 25ft. TT with no special inverters etc. for 120 volt operations.

Good luck

In addition to the other comments, it depends in a LARGE part upon how old the battery IS; that is, whether it is really healthy or mostly worn out.

If your present "battery meter" is just a group of lights, then an actual digital voltmeter would be a HUGE help.

Bottom line: Your just going to have to try it and see. A "trial run" parked somewhere near home is always a good idea.

What size battery? Can you turn off the dew point heater on the fridge? If the first question is Grp. 24 and second is no then 1 maybe 2 nights. If you can turn off the fridge heater and minimize the number of lights then 2 to 3.
Increase the battery size and time will be longer.

With just lights, and water heater and refrig on propane, you should get 1 or 2 nights. We have gone 6 days but just using lights when necessary (that does not include leaving several lights on for 3 hours). Propane lantern outside and one of those 6 volt lantern type portable lights in side will save a lot of your battery, which you are trying to save so the refrigerator will work. Turn the furnace on and all bets are off.

The answer is a battery monitor that displays the per cent of full charge. With that in place you always know your state of charge and will soon know what you can use. X2 on LED lights - cuts energy use by a factor of 5 to 7.
Ebay bargain battery monitor

If you need more electric energy go for a solar panel; nice and quiet for Walmart and any campsite.

Your Minnie has lots of room for solar panels. And your fridge on propane uses some power so you not necessarily good there. Some basic RV electrical reading needs to be on your agenda.

westend wrote:
Your questions are unanswerable because there is no information as to type of battery, its state of charge, and the draw from the devices you wish to power.

Ditto.

THe question is impossible to answer because there are too many variables involved.

If you want to know ho long they will last, you need an amp hour meter.

Your questions are unanswerable because there is no information as to type of battery, its state of charge, and the draw from the devices you wish to power. FYI, your battery also offers power to the fridge in gas mode, the water heater, and also keeps certain alarms and circuit boards powered, continually.
A good, temporary solution is to buy another battery and have some way of connecting it to your RV, should you need it.