ericfx1984
Solar Enthusiast
- Joined
- Oct 10, 2021
- Messages
- 742
Purchasing some 230 amp hour Eve cells I'm trying to decide between laser welded studs or screw in studs?
Which one would you pick and why?
Which one would you pick and why?
If drawing around 150 amps or less I would go with laser welded studs. This was tested by someone with good results. Screw in is very easy to strip but there are ways to minimize the risk. If drawing more than 150 amps then I would probably go with screw in studs because the terminal surface area is greater and capable of handling 1C loads with minimal loss at the terminals.Purchasing some 230 amp hour Eve cells I'm trying to decide between laser welded studs or screw in studs?
Which one would you pick and why?
Does that unscrew? crap is that the screw in post?Are you talking about the new screw posts from DOCAN?
View attachment 76687
They are M6 screw poles using grub screw.Does that unscrew? crap is that the screw in post?
Those are welded screw postsso if that (see above) is screw in, then is this laser welded post?
Some people reported laser welded studs breaking off. Apparently that wasn't the design the cells were originally engineered for.
I think those are welded on nuts on top of the terminal. My cells came like this and I have had no issues.Are you talking about the new screw poles (M6) from DOCAN?
Are you talking about the new screw poles (M6) from DOCAN?
View attachment 76687
Are you talking about the new screw poles (M6) from DOCAN?
View attachment 76687
With those screw poles does the bus bar sit atop the pole and would a screw or stud be used to secure the bus bar?Are you talking about the new screw poles (M6) from DOCAN?
View attachment 76687
Do the holes go through? Or is there a bottom?
wrong. Terminals could have a nut to hold it with a wrench while tightening up, so you do not tighten it against the cell body but just against the terminal itself. It's just a bad design. Garbage design always comes from lack of lateral thinking. They could learn e.g. from a plumberMost TERMINALS are limited to 8Nm of torque regardless of connection method, i.e., it doesn't matter whether you use M6, M8, welded terminals, grub screws, etc.
it's not a thread limitation, it's a limitation on how the terminals are connected in the cells.