Cedarhill
Deep South
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Joined: 09/20/2011
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Our travel trailer that is somewhat larger and probably more power hungry than yours. We have more than one battery but a single Group 27 12V Interstate deep cycle battery lasts us one night plus a little reserve and we are only moderately conservative. I would not want to go somewhere like Alaska without at least one additional reserve battery. Even with a spare, you will need to run your generator for several hours every other day to keep up.
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smkettner
Southern California
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How warm is the thermostat overnight? Put it down closer to 60-65 (or less) (or off)
The 7155 is a slow charging converter. What generator do you have?
You should make it with one group 27 but you need a better charging system.
Consider getting a 20 to 40 amp portable charger and if there is space for a second battery get it.
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mitch5252
NW Tennessee
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Not using furnace...roughing it out! Haha.
I have a Honda eu1000i and found out a bit ago battery checked out fine!
No space for second battery.
Might make it to Sheridan WY tomorrow. Hopefully an RV dealer can be found, if necessary.
Sigh.
smkettner wrote:How warm is the thermostat overnight? Put it down closer to 60-65 (or less) (or off)
The 7155 is a slow charging converter. What generator do you have?
You should make it with one group 27 but you need a better charging system.
Consider getting a 20 to 40 amp portable charger and if there is space for a second battery get it.
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mena661
Southern California
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Ok, missing some info. Is this a recent problem?
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MEXICOWANDERER
las peñas, michoacan, mexico
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Shucks I don't even trust a battery that's supposed to be brand new. Start there.
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Almot
Vancouver BC
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Well... You don't need lights this time of year in Alaska. Kill the radio for when not in use - pull the fuse, like Mosey said. You'll lose station presets, no big deal.
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Z-Peller
Oceanside BC
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Joined: 07/12/2003
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As mentioned by a previous post, check your fridge for a humidity switch, and be sure it is turned to "off"....when it is "on" it runs a small 12v heating circuit around the door opening to reduce sweating around the fridge door seal....it will kill your battery in about the time period you are experiencing.....ask me how I know!!
Bill
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RJsfishin
Winston Or.
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From what the OP said, they have an unusual drainage on the battery,....plain and simple,
Add to that problem,....they have a single stage converter that would have to run 4 hrs a day for even one discharged battery And thats if was working correctly,....which at the voltages given, it may not be !
In that predicament, I'd have an RV elect tech check it out
Rich
'01 31 ft Rexall Vision, Generac 5.5k, 9245 conv, 400 watt inv, 2 12v batts, ammeters, KingDome/sat, Two Oly Cat heaters, and towing a '05 Jeep Liberty, or sometimes towing a Lowe bass boat.
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dclark1946
Richardson,TX,USA
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mitch5252 wrote:Not using furnace...roughing it out! Haha.
I have a Honda eu1000i and found out a bit ago battery checked out fine!
No space for second battery.
Might make it to Sheridan WY tomorrow. Hopefully an RV dealer can be found, if necessary.
Sigh.
smkettner wrote:How warm is the thermostat overnight? Put it down closer to 60-65 (or less) (or off)
The 7155 is a slow charging converter. What generator do you have?
You should make it with one group 27 but you need a better charging system.
Consider getting a 20 to 40 amp portable charger and if there is space for a second battery get it.
You should be able to go a full day with a healthy Gr 27 battery if you are only operating the basic fridge, water heater, water pump and some lighting. We dry camp for a full week with a single Gr 27 in the Smokies and run the Fantastic vent fan all night long. We charge with a Honda Eu 1000 for about 3-4 hours each morning and the battery charge current drops off from 10A (starting charge) to 3A by that time indicating that it still had plenty of capacity before starting to recharge. Our trailer parasitic current draw with the fridge and water heater on but no lights or other accessories on is on the order of 0.5 A so that is only 12AH per day
If you are going to be dry camping you really need to consider purchasing and learning to use a clamp-on Ammeter to check your parasitic current draw and charging current. Knowing the battery voltage is only half of the information you need to manage your 12V system. Sears carries a nice DC clamp-on that should work well.
Dick
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mena661
Southern California
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dclark1946 wrote:
If you are going to be dry camping you really need to consider purchasing and learning to use a clamp-on Ammeter to check your parasitic current draw and charging current. Knowing the battery voltage is only half of the information you need to manage your 12V system. Sears carries a nice DC clamp-on that should work well.
Dick X2, these things are invaluable.
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