Itinerant1
Itinerant
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Joined: 05/23/2017
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Pick your posion for setting and move on with other daily activities, let it do its thing quietly in the back ground. Just have to have confidence in the equipment...if you don't you might need better equipment. ![[emoticon]](https://forums.goodsamclub.com/sharedcontent/cfb/images/wink.gif "wink")
12v 500ah, 20 cells_ 4s5p (GBS LFMP battery system). 8 CTI 160 watt panels (1,280 watts)2s4p,Panels mounted flat. Magnum PT100 SCC, Magnum 3012 hybrid inverter, ME-ARC 50. Installed 4/2016 been on 24/7/365, daily 35-45% DOD 2,500+ partial cycles.
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pianotuna
Regina, SK, Canada
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Joined: 12/18/2004
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Itinerant1,
How do you manage on less than 2304 watt-hours per day? Are the panels actively running the RV during daylight hours? Do you know the total electrical use per day?
Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp-hours of Telcom jars, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.
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Itinerant1
Itinerant
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Joined: 05/23/2017
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pianotuna wrote:Itinerant1,
How do you manage on less than 2304 watt-hours per day? Are the panels actively running the RV during daylight hours? Do you know the total electrical use per day?
I don't know now what you mean by how do I manage on less than 2304wh, 175ah +/- daily? Batteries
Yes, solar is always running loads during the day and the balance of power charging the batteries if needed.
Do you mean electrical use per daylike this?
![[image]](https://i.imgur.com/yMuljaJl.jpg)
![[image]](https://i.imgur.com/JVYRcoVl.jpg)
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jaycocreek
Idaho
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Joined: 12/28/2013
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The weird thing is the vast majority of stand alone lfp chargers are set at 14.6 volts for those that do not use solar or want to just top it off after cloudy days..Expert powers charger is 14.4 but none are adjustable or lower voltage that I know of...
Not much choice for those that don't do solar and rely on a charger for accurate charging..
Lance 9.6
400 watts solar mounted/200 watts portable
500ah Lifep04
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Cptnvideo
Arizona - most of the time
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Joined: 11/05/2006
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Nice chart, Itinerant1.
My daily use is around 220-250ah. But we have a 20cf res fridge.
When boondocking, we all have to conserve water including taking navy showers. But DW and I don't have to conserve electric other than how long the A/C runs.
Bill & Linda
Arizona
2019 Dodge Ram Laramie 3500 dually 4x4 diesel
Hensley Trailer Saver BD5 hitch
2022 Grand Design Solitude 378MBS
1600 watts solar, Victron 150/100 MPPT controller, GoPower 3kw inverter/charger, 5 SOK 206AH LiFePo4 batteries for 1030 ah
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time2roll
Southern California
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Joined: 03/21/2005
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Meanwell NPB series charger works well for me.
2001 F150 SuperCrew
2006 Keystone Springdale 249FWBHLS
675w Solar pictures back up
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Itinerant1
Itinerant
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Joined: 05/23/2017
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I believe because the industry is still stuck in dead lead thinking and why not the vast majority of rvs still believe in killing the lead batteries and go buy cheap replacements. Nothing wrong with that because it fits their needs and wallet.
I think once you enter into larger battery bank and want to power high draw items you can't beat a programmable inverter/ charger. Yes it cost a little more but the user has entered into a higher cost battery that could be a truely set it and forget system if that fits their wants. Some folks like to tinker with the system.
With my system which has been powered on for 2,279 days (inverter/ charger never been turned off), 2,095 days have been boondocking. The 184 days that were hooked up to a power pole I would turn off the 120v charger but leaver the loadshare set to 15a, 30a or 50a depending on incoming ac power and let the 12v loads be powered from the batteries, solar would top off batteries and float at 13.6v while the 120v is passing through to power the rig. Doing it this way if the rv park did lose power I still have full batteries and I go on enjoying the convenience of everything in the trailer uninterrupted. Which has happened a couple times, once the rv park owners came around and apologized for the power lose but we didn't even know it till I looked at the displays.
Nice having choices.
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Cptnvideo
Arizona - most of the time
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I'm set up the same way while plugged in. On my Go-Power inverter, I can adjust load share but it only monitors and limits line 1.
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pianotuna
Regina, SK, Canada
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Joined: 12/18/2004
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Itinerant1,
Your watts harvested, I think, answered my question. Thanks for taking the time to post the chart.
What I was asking was your daily total consumption. It appears that on the "worst" day 7.9 kwh were harvested and "consumed"?
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Itinerant1
Itinerant
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Actually 7.9 kwh is one of the better days. Longer daylight hours and sun shining the more power I can purposely use (waste) in the way of the air conditioner. As you know being a veteran to solar... late spring, summer, early fall really isn’t a challenge for off grid living with solar/ batteries. Winter with shorter days, low sun arc and flat mounted panels can be a little more challenging but nothing that a generator can't handle with a 1 or 2 hours run for a hold over charge (20-40% SOC boost) using the lfp batteries in a partial SOC for long periods. 175-225ah is a normal daily use anything over that is air conditioner running, fridge turned over to electric instead of propane, just using any excess power that solar is producing because it's there. ![[emoticon]](https://forums.goodsamclub.com/sharedcontent/cfb/images/smile.gif "smile")
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