Man you guys are freaking awesome. All great info. Thanks!! Will post pics here, and I'm sure more questions, when I get the rest of the components. Here are the batteries. 94lbs each 🤕
Finished it last week. Very excited to share. Everything is running smoooooth. Haven't really put the batteries to the test yet and not really expecting the best performance after charging them in a parallel train with the 15A charger. They will get above 14V then drop back down to around 13.56V...
The Datasafe's say
Internal Resistance (mΩ): 3
Can seem to find it on the FIAMM on this pdf
https://www.fiamm.com/fileadmin/user_upload/products/reserve/FLX/FLX_FOLDER-NA_ENG.pdf
Thank you, from what you said I will go with the left drawing with the battery bar. But I will most likely have to make some 18" cables to make that stretch from the strings on the outside of the bank.
If I was going to post details about my new setup I'm currently working on and ask some questions about it, which section of this forum do you guys recommend I do it in to get the best help? Thanks!
Do you have any links to a good fusing diagram for me to follow? Or what size/type inline fuses I will need for my particular bank? I also saw where I need to fuse my incoming PV power. I'm just trying to skip the googling and research and go ahead and order all this.
I'm back and forth on this fuse issue. Really the last thing I haven't bought. I keep reading conflicting information on how to choose the correct amp fuse. As @Hedges stated, these are 3000W per battery. So please forgive me if I'm completely off here I'm just assuming... But 3000W÷48V = 62.5A...
My focus with this was to keep it as simple as possible. I see a lot of setups that just seem to have too much going on. I wanted a few breaks in the battery cables as possible.
This attached pic is what led me to believe it was for 48V. Hopefully eggo chimes in. I emailed Victron about it, depending on what they say I'm gonna go ahead and order different ones tomorrow and get them on the way.
Thanks Tim that helps. But I won't have a choice but to wire the batteries in series/parallel right? If I have (12) 12V batteries going for a 48V system?
Also Victron responded and it's not really confidence inspiring. Attached.
Solar has been fascinating to me for a several years now and I'm finally building my first system. Mostly for a back-up grid goes down scenario to run the well pump, etc. System will be based around the 48V Growatt SPF 6000T, which I am buying barely used next week. I already have the batteries...
Great to hear that I made a solid choice with the AGMs. So I guess I should have been more specific. I'm building this for a shtf extended grid down scenario, where fuel would eventually run out. I'm all about solar and these panels have gotten so cheap, I guess I keep finding surplus from these...
Yea I read about the class T, I will prob update those. I haven't read it yet, but that thread you linked, the fire was caused by a mrbf fuse? As far as doing more construction, I need a break for a while this was quite the project to do alone.
Thanks Tim! I made the post. Would love to hear any thoughts you have on it.
https://diysolarforum.com/threads/first-build-i-have-questions-and-would-like-to-hear-any-suggestions.81596/
Are you saying the extra string I added is too much and I should go back down to 12? Or that the AGM batteries I'm using are inherently safer than other choices?
Anybody have experience with these victron battery balancers? I linked the product ^^^ in my second to last reply to @timselectric . I was on the road working and ordered 3 of them in haste. The product pics clearly showed how you would hook them up for a 48V system, but after I ordered them I...
Oh and I will be wiring the output to a breaker box at some point, I just wanted something to plug the AC unit into for the time being. Also finished the last step of grounding the panel frames today into the grounding rod.
I just went with 48V 200A terminal block fuses for the positive end of each string (4 strings total). And a 48V 250A breaker going into the inverter. In regards to the pics I attached: I know you need to keep cable lengths the same. But is it ok to do all the series connections shorter (6...