I put this battery in my RV a couple of days ago. I had it pretty full of electricity. In spite of me using very little electricity and having 800 watts of panels, it's just running out of electricity. I suspect it is because some parameter is out of whack somewhere.
Could you tell me which parameters on my BMS have changed that you don't advise? I've got the Overkill manual. It also says that the parameters shouldn't be changed, and they tell you what they are measuring, but they give no figures to start.
I'm trying to 100% charge my batteries, so that I can set my shunt at 100% so I can tell "where" I am regarding SOC.\
3.3v per cell is pretty dead, you'll want to give it a proper charge and then see how it works for you.
The "Cell Full Voltage" should be somewhere around 3600mV or 3650mV which is where we set our top balance to.
LFP isn't as linear as lead acid so there's a LLOOTT of power between 3.2v and 3.6v per cell.
Total Cycle Capacity should be 300000 or 302000 as well.
It's currently only using 80Ah and calling that a "Full Cycle" and shutting off discharge.
Well, I made the changes advised. I noticed my array said it was making about 530 or 540 watts but now its back down to just a few watts (unless i read it incorrectly)
I have a propane and combo electrical fridge, but its never set for running off electrical, only propane.
I have a couple of exhaust fans that I think are original and take a relative lot of electrical, as does the compressor (which pushes water through my pipes) I have a couple of 120 fans, but they're running off of my 120 volt generator. Not much more there that uses electricity
Both my current JBD's do that. I learned the hard way that skipping a 0 in the settings tended to shut the battery off when I used 9.5% instead of the 95% I wanted. That "reserve" that it programmed for was my Full Cycle setting. By default it wanted to only use 80% of the capacity and I wanted to change that.The only thing this value is used for is to compute SoC. The only way it will shut off is if there is an SoC based shut off, and I don't see that.
If the battery reached 14.2 volts that its very near full, well over 98%.Doesn't seem like everything is working like it should if I cannot even charge my battery after 12 hours charging
That's an issue, you've got 50+ amps of potential power but your charge controller is limiting you to 30a. That's going to slow down the process a LOT!I've got 800 watts solar AND 30 amps
14.6 volts seems high for regular charging and once the 'surface charge' is depleted full charged resting volts is in the region of 13.5 volts.( well it like that with my batteries).14.6 is where we top balance to and resting is 14.2-14.4
So the 30a is a secondary controller? Gotcha, that makes more sense.My understanding from the title that the controller is a Renogy 60 amp.
I missed that also.So the 30a is a secondary controller
The additional 30 amps is from a Victron BSC IP22 single output charger of 15 amps or 30 amps. It's "smart" (along with mySo the 30a is a secondary controller? Gotcha, that makes more sense.
Why cannot you change these? These values are not default values so you must have set up 'user values. These values are not ideal .There are some figures that I cannot change.
OverVoltage 16.0 V
ShgLimitVolt 15.1 V
Eq;uChgVol 14.0 V
BstChgVolt 14.0 V
FltChgVol 14.0 V
BstChgev 12.8 V