Victron charge settings
- Thread starter Haze
- Start date
Q-Dog
¯\_(ツ)_/¯
Does SOK not have suggested settings?
Haze
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I read the manual and asked the vendor , this is all current connected shared with me when I spoke with them .
Absorb 57.6
Float 55.2
Turn on lithium battery charging on your Multi Plus.
The manual says to do other stuff but just wondering if folks running this battery have similar settings.
Q-Dog
¯\_(ツ)_/¯
I would probably reduce the absorption time by a lot. Maybe .5 hour. Unless you are having issues, LiFePO4 doesn't really need a long absorption time.
sunshine_eggo
Happy Breffast!
55.2V absorption (3.45V/cell)
1-2 hour fixed; longer if not getting to sufficiently high SoC.
54.0V float
If charge speeds are slow, adjust absorption up and time down. These are my typical limits:
55.2V absorption, 2 hours for slow charging
57.6V absorption, 15 minutes for fast charging.
1-2 hour fixed; longer if not getting to sufficiently high SoC.
54.0V float
If charge speeds are slow, adjust absorption up and time down. These are my typical limits:
55.2V absorption, 2 hours for slow charging
57.6V absorption, 15 minutes for fast charging.
Do you have a temperature sensor on the charger?
If so… enable the low temp cutoff at around 38F - that’s probably well below what the battery will ever see. I always use low temp charging cutoffs above the bms cutoff temp point.
Do you only have one 100ah 48v battery? If you have more than one then raise the current charge - but for one battery 30a is a .3C charge - which is where I would have it.
I use a lower float on my 12v battery 13.5v = 3.375v per cell - = 54v
If so… enable the low temp cutoff at around 38F - that’s probably well below what the battery will ever see. I always use low temp charging cutoffs above the bms cutoff temp point.
Do you only have one 100ah 48v battery? If you have more than one then raise the current charge - but for one battery 30a is a .3C charge - which is where I would have it.
I use a lower float on my 12v battery 13.5v = 3.375v per cell - = 54v
Haze
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I have it set lower because I’m charging from a wall outlet in my old house right now and I’m afraid to pull to many amps. Yes I only have one so far, will be getting another next week.
sunshine_eggo
Happy Breffast!
Definitely use the long slow charge settings. You also need to set the AC input limit according to the house circuit. With this set, it doesn't matter how high your charge current is. It will not pull more charging than can stay within the AC input limit.
General tab:
If you're charging on a 15A circuit, set for 13.5A
sunshine_eggo
Happy Breffast!
When will you be getting your Cerbo? That's when the real boners hit.
Haze
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I have the cerbo already hooked up, unfortunately I’m to dumb too understand 90% of what it can do.
I can't get over how neat this solar is…you all are bad influences on me. Now I need more panels…I can see this is going to be an expensive hobbie.
Haze
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It’s sitting on my wife’s dining room table as we speak. Next week I’m going to load it all up in my snow cat and try to get into our cabin. Might be a few weeks before I get it all mounted but, I will get pics of it as soon as possible.
sunshine_eggo
Happy Breffast!
Note that the VE.Bus smart dongle does not allow for programming. Monitoring only. MK3-USB required to program with VictronConnect.
When you're ready, we'll be here.
When you're ready, we'll be here.
Brucey
Solar Wizard
Once the solar forecast shows up in VRM....ohhh baby.
Haze
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Ok I’m now onto setting up the MPPT side of our system. I have one Victron 450-100 , I’m wondering how many of these panels can I run in series ? Our cabin does see freezing temps since we sit right above Lake Tahoe. I want to play it safe so I was thinking 4 panels in series on each controller . Am I missing something, or does this look ok. Thanks 
yodamota
Solar Enthusiast
looks good to me. appears to be over the 120vdc start up voltage. How many panels are you installing?
Haze
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I was going to go with 4 in series on each tracker just to play it safe the first year.
