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Old 06-20-2023, 06:06 PM   #1
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M.O.C. #32705
Solar flex

Does the system need to be turned off when not being used, just put in lithiumí batteries in , donít want to overcharge them or is it controlled by victron system so they donít overcharge?
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Old 06-20-2023, 07:33 PM   #2
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You don't have to worry about over charging. The victron and internal BIM will take care of it.
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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Old 06-20-2023, 09:11 PM   #3
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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?
Tony & Donna
2022 Montana HC, 295RL, Solar Flex 400, Onan 3600 LPG, 2K inverter, 200AH Lithium. 2020 GMC Denali 2500 6.6 Duramax, Demco 21K Auto Slide
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Old 06-21-2023, 06:30 AM   #4
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M.O.C. #30262
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.
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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Old 06-21-2023, 03:13 PM   #5
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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.
23 Montana 3761FL Legacy
23 Ford F350 6.7 HO Lariat Ultimate DRW
20K Goosebox with B&W OEM Ball
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