So I consider myself pretty good with electrics but for some reason what I thought was going to be an easy swap has got me stumped. Unless there's different types of bms's cause this part is pretty new to me. Anyways I have a Jetson bolt battery that I smoked the Bms on. It's a 36v 10s 6AH battery with 30 cells. I labeled the wires before I took off the old Bms. Iordered a cheap Bms off Amazon. When I got it hooked it up my charger stayed green when I plugged it in (not charging) I ordered a second Bms slightly better and that has the same problem so I decided I should probably do a little more research and this is what I have come up with.
I have taken pictures of both sides of the battery, both new BMS's, and the old BMS. I think I figured out what my problem is but don't know enough to figure out how to fix this issue. Besides the fact I'm pretty sure I need to disassemble the battery and charge all the cells to the same voltage before I move forward.
No what I think the problem is...
When I use my meter and test each numbers where the old BMS wires (scene wires?) were going to this is what I get
1. 9v 6. 23.2v
2. 8v. 7. 18.1
3.12.1v. 8. 30.5
4.18.2. 9. 39.6
5. 28.6v. 10. 38.7 (Bats + and -)
Everything I have read and watched says these spots should be 3.5v. like I said these are where the old wires went to I just assumed that's where the new ones would go. Can someone please explain this better what the problem may be and what I need to do to correct this.
I have taken pictures of both sides of the battery, both new BMS's, and the old BMS. I think I figured out what my problem is but don't know enough to figure out how to fix this issue. Besides the fact I'm pretty sure I need to disassemble the battery and charge all the cells to the same voltage before I move forward.
No what I think the problem is...
When I use my meter and test each numbers where the old BMS wires (scene wires?) were going to this is what I get
1. 9v 6. 23.2v
2. 8v. 7. 18.1
3.12.1v. 8. 30.5
4.18.2. 9. 39.6
5. 28.6v. 10. 38.7 (Bats + and -)
Everything I have read and watched says these spots should be 3.5v. like I said these are where the old wires went to I just assumed that's where the new ones would go. Can someone please explain this better what the problem may be and what I need to do to correct this.