new forum member, first post. Great site, lots of good info here.
I'm working on the system design for a van conversion and debating battery choice. My current plan is:
multiplus 12/3000 inverter charger
400-600 watts solar (still figuring out what I can fit on roof along with AC and fan)
50A mppt solar charger
1 or 2 orion B2B 30A chargers (my van has a 250a alternator, so I figured I might go with 60a charging, but I still need to confirm it won't be problem for alternator)
400Ah battery bank. Was looking at Battleborn 100Ah x 4, SOK 206Ah x2, or SOK 100Ah x 4
The SOK 206's look pretty good and I like the idea of just having 2 batteries to minimize cables and complexity.
My concern is that it looks like the 206Ah can only draw 100A continuous (200A total for both batteries) and can only charge 40-50A continous (80-100A total) based on the specs. I've seen posts where they claim it can be higher on both, but those are the numbers on their specs and I'm inclined to go with them.
I figure the 200A output is probably fine (but borderline) since the inverter is only rated at 2400 continous and I wouldn't be pushing those kind of AC watts for extened periods and my DC loads shouldn't ever be too much.
I'm more concerned about the charging limit recommendations of 80-100 on the SOK battery bank. I think the inverter can charge 120A continous from shore power and I could also pushing 30A+ from solar at the same time. Theorectically, the engine could also be running at the same time delivering additional Amps from the alternator (B2B), but that wouldn't be an intentional mode. The inverter charger alone is beyond the recommended and max charging limits for the SOK. Would the batteries accept an extended 150-200A charge without any significant problems? Would the BMS adjust by cycling on and off or something or would the cells potentially be damaged or might it cause a failure of some kind?
I'm thinking it would be better to just go with 4 100Ah batteries instead of 2 206's just to have some buffer for charge/discharge amps. For the SOK 100's, it's not that much more $, but doubling the number of batteries just makes install harder and more big cables and failure points. The way their posts are oriented also makes cabling more then 2 of them in parallel a bit wonkey for how I'll need to mount them (end to end).
So, any thoughts on going with the 4 smaller batteries vs. the 2 bigger ones? Am I over thinking the charge/discharge issue or is this a valid concern based on the system I am planing?
I'm working on the system design for a van conversion and debating battery choice. My current plan is:
multiplus 12/3000 inverter charger
400-600 watts solar (still figuring out what I can fit on roof along with AC and fan)
50A mppt solar charger
1 or 2 orion B2B 30A chargers (my van has a 250a alternator, so I figured I might go with 60a charging, but I still need to confirm it won't be problem for alternator)
400Ah battery bank. Was looking at Battleborn 100Ah x 4, SOK 206Ah x2, or SOK 100Ah x 4
The SOK 206's look pretty good and I like the idea of just having 2 batteries to minimize cables and complexity.
My concern is that it looks like the 206Ah can only draw 100A continuous (200A total for both batteries) and can only charge 40-50A continous (80-100A total) based on the specs. I've seen posts where they claim it can be higher on both, but those are the numbers on their specs and I'm inclined to go with them.
I figure the 200A output is probably fine (but borderline) since the inverter is only rated at 2400 continous and I wouldn't be pushing those kind of AC watts for extened periods and my DC loads shouldn't ever be too much.
I'm more concerned about the charging limit recommendations of 80-100 on the SOK battery bank. I think the inverter can charge 120A continous from shore power and I could also pushing 30A+ from solar at the same time. Theorectically, the engine could also be running at the same time delivering additional Amps from the alternator (B2B), but that wouldn't be an intentional mode. The inverter charger alone is beyond the recommended and max charging limits for the SOK. Would the batteries accept an extended 150-200A charge without any significant problems? Would the BMS adjust by cycling on and off or something or would the cells potentially be damaged or might it cause a failure of some kind?
I'm thinking it would be better to just go with 4 100Ah batteries instead of 2 206's just to have some buffer for charge/discharge amps. For the SOK 100's, it's not that much more $, but doubling the number of batteries just makes install harder and more big cables and failure points. The way their posts are oriented also makes cabling more then 2 of them in parallel a bit wonkey for how I'll need to mount them (end to end).
So, any thoughts on going with the 4 smaller batteries vs. the 2 bigger ones? Am I over thinking the charge/discharge issue or is this a valid concern based on the system I am planing?
