@@davidchristensen1219 Yes David, they don't like being below about 3.5 Volts, in fact, there's nothing much left once you reach that discharge level :-)
Love this video! Now, if only Nissan Leaf cells were available again. They're rarer than hen's teeth. I have 9 cells in series-parallel to 24V, and wish I had bought 3 or 6 more. Now, you can't find them anywhere without being at about 35AH capacity...
@@mark_osborne I have toyed with that idea... I don't have use of a whole pack, but I am sure that I could sell what I don't need and recoup some of my cost. I'm not much of an auto mechanic, so I'm not particularly sure how to accomplish that part.
Well this kind of makes your point. I have a pack waiting for 4 years to set up. I’m going to put mine in a shed. Not the house. The 30a fuse is a good idea. If I had a spare 2 grand I do a BMS. See no reason to commit and get it going
Nice setup. I also use those GTIL2 inverters and Chevy volt batteries. I see your voltage is 48v, do you still have the 16s Chevy volt batteries that come in the full packs?
They need to be pressed together, I just took 2 x 12's, cut them to size to make 'end caps', then ran threaded rod to hold them together, simple, cheap, and effective
Mark that tells me a couple things. #1 you were very meticulous in measuring every parallel wire to be exactly the same. All your buss work is typical as well. #2 EV batteries do not drift in low C charge and discharge rates. In other words compared to the abuse the batteries would receive on a daily basis the way you are using them is relatively mild. As you know I use a BMS on every Tesla model just because of the fire risk. I actually charge below the charge voltage setpoint. If I see any drift I have to charge to 4.14 volts per cell to bring them back in line. Mu normal charge is 4.04 per cell. Now they make a smart BMS with program ability. They are $150 each and I use 6 of them. Yikes. At that price I'll wait till I see a voltage drift. You definitely were thinking outside the box on this one. I could see someone paying less attention to detail and getting in trouble real fast. Having fuse on each module was a great Idea. What do you think your maximum current per modual is? I doubt you are anywhere near 30 amps.
Steven, the most any one 48V pack can see is about 7 amps based on the inrush current I measure when the 240V (automotive) hoist starts. For some reason that 2 hp motor really pulls the current upon start-up. I even put a soft start on it thinking it would help but it only draws out the surge so I removed it. What's funny is I have a small 2 hp air compressor that pulls a fraction of the inrush current that the hoist pulls. Thanks for stopping by and for your intelligent comment !
Sounds like it’s doing well. 💗Did I see a young Cybil Shepherd?
I thought I saw Marsha Brady but at second glance, it does look like a young Cybil.
@Simply Pam - yes in deed !~ ...:-)
I love your updates! It's great to see they are working so well for you. You really seem to be enjoying this. Thank you for sharing.
I have the same batteries as you. I have the CC's and Inverter dialed in pretty well. It's when I get them down
Thanks David !.... we will let the experiment continue :-)
@@davidchristensen1219 Yes David, they don't like being below about 3.5 Volts, in fact, there's nothing much left once you reach that discharge level :-)
Thanks for the update Mark, love your booth babes
Hahahaha #metoo
NICE brother. Glad to see this working. God Bless.
Thanks Bobby ! Hope you're doing well
Love this video! Now, if only Nissan Leaf cells were available again. They're rarer than hen's teeth. I have 9 cells in series-parallel to 24V, and wish I had bought 3 or 6 more. Now, you can't find them anywhere without being at about 35AH capacity...
I didn't realize they were getting hard to find !
@@mark_osborne Really bummed me out because what I have is working really well... I just wanted to add some more storage capacity for cloudy days.
@@HarmonyExpressSkoolie Have you tried to find an entire battery from a wrecked Leaf?
@@mark_osborne I have toyed with that idea... I don't have use of a whole pack, but I am sure that I could sell what I don't need and recoup some of my cost. I'm not much of an auto mechanic, so I'm not particularly sure how to accomplish that part.
@@HarmonyExpressSkoolie ruclips.net/video/zhP_z04xMj4/видео.html
Very cool!
Well this kind of makes your point. I have a pack waiting for 4 years to set up. I’m going to put mine in a shed. Not the house. The 30a fuse is a good idea. If I had a spare 2 grand I do a BMS. See no reason to commit and get it going
Nice setup. I also use those GTIL2 inverters and Chevy volt batteries. I see your voltage is 48v, do you still have the 16s Chevy volt batteries that come in the full packs?
Thanks RJ. The Volt batteries I use are the older 12S
@@mark_osborne ah, you use gen1?
@@RJ-cc1fz Yes, the Volt batteries were from a 2014 and 2015 model year vehicle - I purchased them in 2017
Do these lithium cells need to be pressed/secured together or is just stacking them loosely fine?
They need to be pressed together, I just took 2 x 12's, cut them to size to make 'end caps', then ran threaded rod to hold them together, simple, cheap, and effective
Sure sounds good
Appreciate !
Mark that tells me a couple things. #1 you were very meticulous in measuring every parallel wire to be exactly the same. All your buss work is typical as well. #2 EV batteries do not drift in low C charge and discharge rates. In other words compared to the abuse the batteries would receive on a daily basis the way you are using them is relatively mild.
As you know I use a BMS on every Tesla model just because of the fire risk. I actually charge below the charge voltage setpoint. If I see any drift I have to charge to 4.14 volts per cell to bring them back in line. Mu normal charge is 4.04 per cell. Now they make a smart BMS with program ability. They are $150 each and I use 6 of them. Yikes. At that price I'll wait till I see a voltage drift. You definitely were thinking outside the box on this one. I could see someone paying less attention to detail and getting in trouble real fast.
Having fuse on each module was a great Idea. What do you think your maximum current per modual is? I doubt you are anywhere near 30 amps.
That must be fuse
Steven, the most any one 48V pack can see is about 7 amps based on the inrush current I measure when the 240V (automotive) hoist starts. For some reason that 2 hp motor really pulls the current upon start-up. I even put a soft start on it thinking it would help but it only draws out the surge so I removed it. What's funny is I have a small 2 hp air compressor that pulls a fraction of the inrush current that the hoist pulls. Thanks for stopping by and for your intelligent comment !
Di I need a bms for parallel batteries?