Thanks for the quick reply Ampster, you’re right there are seven batteries together with the circuitboard in front is so you don’t half to run wires from the batteries to the BMS, I was lazy. They sold the BMS and the circuitboard for $65 opposed to $55 just by the BMS so I thought what the heck.
And there is eight BMS’s And 8) 7packs like in the picture. I think the max I can charge one of the seven packs or the whole thing is 58.8v but I usually charge it up to 57V even, And the BMS’s is 60 amp.
for the batteries I have complete that are on the shelves that you seen in the previous picture I would like to remove the circuit board and the BMS‘s and add the Batteries to the rest of the batteries that I got in today and hook them all together to make a big 48 V system and that’s if I went with a central BMS.
My set up is:
66) 250W solar panels used from Satan solar
4) midnight solar classic 250
1) midnight solar classic 150
2) SMA SI6048 off grid inverter Which is capable up to 12,000W joining the two,
Which I’ll probably would never come close to ever using that much it’s just that I needed two of them to make 240 Which I’ll probably would never come close to ever using that much it’s just that I needed two of them to make 240v
So I’ll be running 12 panels per midnight solar classic 250
And also running 18 panels for the one midnight classic 150
about the last post that I made I was referring to just using less BMS’s and keeping the system at 48V it was just an example instead of having a BMS on every seven batteries, maybe skip a seven pack every other one or every five or every seven while still making at 48V.
So you asked what am I powering well I use about 20 kW a day, I typically am running 300 to 400WAH and I live by myself so I’m not always running the washer and dryer.
and you said I could run them in parallel and make them long, what about this idea imagine I had a big ass shelving rack and nice and long with seven shelves And I put 35 batteries on each shelf and take four pieces of all thread and bolt the 35 batteries Together and I do this on all seven shelves and then connect the seven shelves on the end together to make 56 to 58v For a 48 V system, and use one high amp BMS, just a thought I have a long way to go and learning every day.
Thanks for your time Jeff
