Furnace draining battery - Escape Trailer Owners Community

Go Back   Escape Trailer Owners Community > Escape Tech > Problem Solving | Owners helping each other
Click Here to Login
Reply
 
Thread Tools Display Modes
 
Old 09-14-2015, 11:30 AM   #1
Senior Member
 
gbaglo's Avatar
 
Join Date: Oct 2008
Location: North Vancouver, British Columbia
Trailer: 2009 Escape 17B - "Toad". '08 Toyota RAV4 V6
Posts: 10,729
Furnace draining battery

Having problem with battery draining way too fast. It is a brand new Trojan 27TMX.
Im using two 40 watt solar panels to the battery terminals to charge it.
Yesterday we had full sun all day and voltmeter read 13.40 with charge ongoing.
Left the trailer at 6pm. Had forgotten to shut off furnace and I had my laptop plugged into a cheap inverter to charge.
I had not disconnected the solar panels.
Got back to trailer at 9pm and the voltmeter read 12.29.
Later I turned furnace on and voltmeter dropped from 12.29 to 12.00.
Furnace is Atwood 8012. It appears to me that it is drawing way more than one would expect.

Buddy is camping with me in his 19 ( dual 6V ) with no solar, no generator, and is doing just fine after four days.

Any ideas?
__________________

__________________
2009 Escape 17B "Toad"
2008 Toyota RAV4 V6 Sport
North Vancouver, British Columbia

What happens to the hole when the cheese is gone?
- Bertolt Brecht
gbaglo is online now   Reply With Quote
Old 09-14-2015, 12:16 PM   #2
Senior Member
 
Join Date: Oct 2014
Location: Juneau, Alaska
Trailer: 2015 17A - Ready for 4th Maiden Voyage
Posts: 594
Glenn, don't you have portable panels? What voltage are you getting out of them? ..... disconnect from battery first to measure. How long are your leads?


Tom
__________________

__________________
Progress is man's ability to complicate simplicity.
Thor Heyerdahl
StarvingHyena is online now   Reply With Quote
Old 09-14-2015, 12:17 PM   #3
Senior Member
 
Join Date: Jan 2014
Location: North Van., British Columbia
Trailer: 2014 Escape 19
Posts: 3,290
I wouldn't overlook that little inverter as part of the problem. Don't how much your laptop charger takes but that type of inverter is capable of taking 8 amps out of the battery.

Did you notice what your battery level was at the beginning of the day?

Ron
Ron in BC is offline   Reply With Quote
Old 09-14-2015, 12:30 PM   #4
Senior Member
 
memobug's Avatar
 
Join Date: Oct 2010
Location: SF Bay Area, California
Trailer: 2009 Escape 19
Posts: 142
Could your battery be discharging through your solar panels? Is there a diode protecting each panel? If the battery is good, then a lot of current, like 20 amps is going somewhere.

I think the older model 8012-I furnace draws about 3A and the new 8012-II is better, at 1.8 A.

Regards,

Matt
__________________
Escape 19 - 2009
memobug is offline   Reply With Quote
Old 09-14-2015, 12:54 PM   #5
Senior Member
 
gbaglo's Avatar
 
Join Date: Oct 2008
Location: North Vancouver, British Columbia
Trailer: 2009 Escape 17B - "Toad". '08 Toyota RAV4 V6
Posts: 10,729
I have two 40 watt panels. Don't know what voltage I'm getting out. They are connected to a hub which is connected to a 7 amp controller ( supposed to do the job ), which is connected to terminals on battery.
First night the furnace ran a lot overnight. I deployed one panel at 9am. By 11:15am I got 12.99 on voltmeter ( panel connected to battery ). At 12:45 pm I got 13.23 ( panel connected to battery ).
Next day I used two panels through hub.
I'm going to avoid using the inverter. Heading for Osoyoos and hookups today.
Had heavy dew turned to ice on stuff left out over night.
__________________
2009 Escape 17B "Toad"
2008 Toyota RAV4 V6 Sport
North Vancouver, British Columbia

What happens to the hole when the cheese is gone?
- Bertolt Brecht
gbaglo is online now   Reply With Quote
Old 09-14-2015, 01:10 PM   #6
Senior Member
 
Jim Bennett's Avatar
 
Join Date: Oct 2008
Location: Calgary, Alberta
Trailer: 2017 Escape 5.0 TA
Posts: 11,934
Probably a silly question, but do you have the solar charge controllers hooked up inline too?
__________________
2017 Escape 5.0 TA
2015 Ford F150 Lariat 3.5L EcoBoost
2009 Escape 19 (previous)
Most folks are about as happy as they make up their minds to be. Abraham Lincoln
Jim Bennett is offline   Reply With Quote
Old 09-14-2015, 01:20 PM   #7
Senior Member
 
BCnomad's Avatar
 
Join Date: Aug 2014
Location: O town, British Columbia
Trailer: 2014 Escape 21 "Lightning"
Posts: 1,327
Small picky point Glenn or others, but one is supposed to let a charged battery relax (no loads or chargers) for at least 30 minutes to avoid test readings tainted by surface charge. 12V side of life recommends even longer wait times.

The 12volt Side of Life (Part 1)


Can't help with original question.
__________________
When you look for advice, make sure it's from someone towing your trailer, in your backyard, with the same expectations
BCnomad is offline   Reply With Quote
Old 09-14-2015, 02:21 PM   #8
Senior Member
 
Join Date: Jan 2014
Location: North Van., British Columbia
Trailer: 2014 Escape 19
Posts: 3,290
A surface charge mostly comes into play after a battery has just been charged. A person measures the voltage and it says "12.99" and they think that means that the battery is in super perfect condition. It doesn't and it's the surface charge that is misleading. I've found, in real life, running a device for a few minutes will take most of the surface charge off and give a more realistic reading of the battery voltage after charging.

In Glenn's case, I think the inverter was sucking out some juice but the charging voltage from the solar cell regulator, from what I'm used to, is also on the low side.

Ron
Ron in BC is offline   Reply With Quote
Old 09-14-2015, 03:10 PM   #9
Senior Member
 
thoer's Avatar
 
Join Date: Oct 2009
Location: Galesville, Wisconsin
Trailer: 2017 21 "Blue II" & 2017 Highlander XLE (previously 2010 17B "Blue" & 2008 Tacoma)
Posts: 3,961
Glenn, I decided that converting 12V to AC to then be converted back to 12V by the device charger wasn't the best use of battery power. For our phone and iPad, I use the same dual USB, 12V outlet charger we use in the car. I picked up another 12V model that puts out enough current to charge the MacBook now too. Battery drain seems to be very minimal with those compared to the inverter I used to use, but I've not done any real analysis.
__________________
Eric (and Mary who is in no way responsible for anything stupid I post)

SAE Towing Standard "Beware of false knowledge; it is more dangerous than ignorance." George Bernard Shaw
thoer is offline   Reply With Quote
Old 09-14-2015, 06:42 PM   #10
Senior Member
 
padlin's Avatar
 
Join Date: Sep 2009
Location: Southwick, Massachusetts
Trailer: 5.0 TA #6, 2012 F150 EB
Posts: 3,831
I think trying to use a volt meter to check the state of charge while hooked to active solar panels and a running furnace is not going to work. As mentioned, let the battery rest before checking it or use a hydrometer, if.I.have the right word.
__________________

__________________
Happy Motoring
Bob
padlin is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off






» Virginia Campgrounds

Reviews provided by



All times are GMT -5. The time now is 09:31 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2012 Social Knowledge, LLC All Rights Reserved.