Hi all, I have read most, maybe all of thisforum, watched videos until I simply can not go anymore trying to find a logical answer to my question. I will try to convey an overview of where I am at so I can hopefully get someone to help me.I am trying to choose which Batriumwould be the best fit for my system that I am building. I am leaningheavily on building a 14s 20p battery pack system based on what I saw built by user Owitte's "There's a new wall in Germany!". I really liked the smaller packs as I was thinking it would be easier to remove a pack to repair a bad cell instead of pulling a bigger pack like most use, in case of a problem.
So I ordered 1600 18650's from the recent modem sale (200 of the 8 cell modem packs), and I have about 300 processed so far with the mah and resistance written on them, average being somewhere around 2300 and 80. I was going to start making 14, 20 cell packs using repakr,so that I could have a "test" string of batteries complete @48V ready to go for testing purposes. I am really excited to have something to work with just to make sure that my 9, 250watt used panels that i bought off ebay are working properly. I have those wired 3 series 3 parallel to a Epever 60A 6415AN (which i need the setup parameters to manually enter for lithium batteries if anyone has done that please let me know what they are because I didnt realize it was not lithium ready when I ordered it, thanks!). The panels are outputting at 100V usually (36.7 x3) with the partly cloudy days we have been having and should be about 27 amps (8.9 amps each panel). At this time I have a 5000watt 48v Aims inverter coming in a few days. I will buy a better quality split phase once I get more experience.
Ok so from what I gather on Batrium's website and YT vids and these forums, The 48V BMS solution Batrium has is the WatchMonPlus (WM5). But I am seeing information that when I later get all of my cells processed and make the remaining 20 cell packs, and wire them into the system parallel, that the WatchMonPlus will not work. Or will it? Can I just parallel in the next 4 strings and it will work?Or do I need to get the Watchmon4 and buy a large pack of Longmons and place a Longmon on each of the individual 20 cell packs? As I said I have 1600 cells so that will make about 70 packs @20 cells each using 4x5 holders. So thats roughly 5 parallel "strings" of 14 packs (5x of14s20p ).
OR. Should I scrap the whole 5 strings of 14s20p and just make 1 string of 14s100p and then buy what, a WatchMonPlus? I am trying to do this without spending unnessecary excess into BMS, and if changing my packs to larger ones is the more practical solution than so be it.
Thank you!
So I ordered 1600 18650's from the recent modem sale (200 of the 8 cell modem packs), and I have about 300 processed so far with the mah and resistance written on them, average being somewhere around 2300 and 80. I was going to start making 14, 20 cell packs using repakr,so that I could have a "test" string of batteries complete @48V ready to go for testing purposes. I am really excited to have something to work with just to make sure that my 9, 250watt used panels that i bought off ebay are working properly. I have those wired 3 series 3 parallel to a Epever 60A 6415AN (which i need the setup parameters to manually enter for lithium batteries if anyone has done that please let me know what they are because I didnt realize it was not lithium ready when I ordered it, thanks!). The panels are outputting at 100V usually (36.7 x3) with the partly cloudy days we have been having and should be about 27 amps (8.9 amps each panel). At this time I have a 5000watt 48v Aims inverter coming in a few days. I will buy a better quality split phase once I get more experience.
Ok so from what I gather on Batrium's website and YT vids and these forums, The 48V BMS solution Batrium has is the WatchMonPlus (WM5). But I am seeing information that when I later get all of my cells processed and make the remaining 20 cell packs, and wire them into the system parallel, that the WatchMonPlus will not work. Or will it? Can I just parallel in the next 4 strings and it will work?Or do I need to get the Watchmon4 and buy a large pack of Longmons and place a Longmon on each of the individual 20 cell packs? As I said I have 1600 cells so that will make about 70 packs @20 cells each using 4x5 holders. So thats roughly 5 parallel "strings" of 14 packs (5x of14s20p ).
OR. Should I scrap the whole 5 strings of 14s20p and just make 1 string of 14s100p and then buy what, a WatchMonPlus? I am trying to do this without spending unnessecary excess into BMS, and if changing my packs to larger ones is the more practical solution than so be it.
Thank you!