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06-20-2023, 05:06 PM
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#1
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Established Member
Join Date: May 2023
Location: Sykeston
Posts: 33
M.O.C. #32705
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Solar flex
Does the system need to be turned off when not being used, just put in lithium’ batteries in , don’t want to overcharge them or is it controlled by victron system so they don’t overcharge?
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06-20-2023, 06:33 PM
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#2
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Montana Master
Join Date: Aug 2015
Location: Mena
Posts: 504
M.O.C. #17723
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You don't have to worry about over charging. The victron and internal BIM will take care of it.
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Ron & Rhonda
2021 3230CK Montana Legacy w/ Super SolarFlex
(old rig) 2015 Montana 3611RL 8K I.S., Disk Brakes, Sailun Tires
2015 F350 XLT Crew Dually 20K B&W Companion
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06-20-2023, 08:11 PM
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#3
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Montana Master
Join Date: Jan 2022
Location: Shingle Springs
Posts: 2,625
M.O.C. #30417
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That's the beauty of lithium batteries. They have a BMS that prevents overcharging. Even if it's freezing they will stop charging to prevent damage. Now if they don't have a BMS then I suggest you get one.
What batteries did you get?
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Tony & Donna & the best dog ever, Murphy.
2022 Montana HC, 295RL, 720 watts Solar, Onan 3600 LPG, 2K inverter, 200AH Lithium. 2020 GMC Denali 2500 6.6 Duramax, Demco 21K Auto Slide
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06-21-2023, 05:30 AM
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#4
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Montana Master
Join Date: Dec 2021
Location: Northeast TX
Posts: 1,016
M.O.C. #30262
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X3 on Victron MPPT and battery's internal BMS (Battery Managrment System) taking care of your lithium batteries for you without concern.
Do suggest getting the specific charge parameters for your batteries from either data sheet or directly from the manufacturer. Those parameters will need to be inputted into your MPPT to get full benefit from your new batteries.
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 Lee, Edith, Lil' Bit & Cuddles
22 MHC 331RL, Surge Guard 35550, SumoSprings, Kodiak disc brakes, 412Ah Lithium, Gen 3 Goosebox, Sailun 85s
22 Ram 3500 CC DRW 6.7 CTD Herrin Hauler Classic Bed, 45 gal AUX tank
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06-21-2023, 02:13 PM
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#5
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Established Member
Join Date: Dec 2022
Location: Grand Prairie
Posts: 15
M.O.C. #32042
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I turn off the charge controller when parked in covered storage. We have the 400i package with the factory dragon fly lithiums.
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23 Montana 3761FL Legacy
23 Ford F350 6.7 HO Lariat Ultimate DRW
20K Goosebox with B&W OEM Ball
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09-17-2024, 06:14 PM
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#6
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New Member
Join Date: Sep 2024
Location: Brackettville
Posts: 2
M.O.C. #34804
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Installing Lithium battery with a higher than 100 ah rating?
I just purchase a new 2024 Montana that came with Solarflex 400I system with a 12V lead acid battery. I wanted to install the lithium batteries. My question is, can I use a battery with a higher amp hour rating then 100ah. In shopping around, I notice 250 ah battery which double the useful capacity for less $$$.
Do you have any information regarding the 400I system capable with higher ah battery if not, do you know were could look or someone I could talk to?
Thank you four time. I register(jonvon) and am a new member of Montana 5th wheel association.
Jonvon
jonvon01@yahoo.com 2024 Montana with 400I SolarFlex system.
2020 F250
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09-17-2024, 06:21 PM
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#7
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Montana Master
Join Date: Jan 2022
Location: Shingle Springs
Posts: 2,625
M.O.C. #30417
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I have the same solar system. You can upgrade to whatever amp hour you wish. It won't affect the solar. Will charge as much as 400 watts of solar can. Example I have 400 W of solar and 200 amp hours of lithium. If I increase my solar to 800 Watts then I would charge twice as fast. I am upgrading as we speak so that I can charge quicker with out using my generator as much
__________________
Tony & Donna & the best dog ever, Murphy.
2022 Montana HC, 295RL, 720 watts Solar, Onan 3600 LPG, 2K inverter, 200AH Lithium. 2020 GMC Denali 2500 6.6 Duramax, Demco 21K Auto Slide
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09-17-2024, 06:30 PM
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#8
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New Member
Join Date: Sep 2024
Location: Brackettville
Posts: 2
M.O.C. #34804
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Thank you so much for the info & quick reply
jonvon
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