Interesting. I had not seen that arrangement before.
A few important things:
1) please keep us informed of how well they work.
2) Who did you buy from? Please provide a link.
3) What size threads are those?
4) Can you tell if they a stainless steel studs?
They look like they provide similar contact surface so they should work as well electrically as the welded male studs from Amy.
It looks like there are sufficient threads so if they are stainless steel studs they should alleviate the stripping issue. However, mechanically there is at least one benefit to these and one downside to these.
* The benefit is that you can put whatever length grub screw you need on the terminal. Being able to select stud size is primarily a benefit when you are paralleling several cells and need thick bars. (Amy's standard size male welded stud does not work with 1/4" thick home made bus bars very well.)
* The downside is that this is going to create a taller connection. The height difference is small enough that it should still fit in most installs. However, there is a second problem with height that should be noted: By lifting the bus-bar and cable lug up off the cell terminal, it creates a moment arm that will amplify any stress placed on the terminal. This makes it all the more important that the cells are assembled into a battery in a way that does not create stress on the terminals.
- The cells should be clamped together in a way that does not allow them to move relative to each other.
- The large wires for the battery positive and negative should be as flexible as possible and clamped down in a way that will minimize any stress.
In addition, with the taller connection, there is more exposed conducting material that is just asking for me to drop a wrench across.....
