I have blown through 2 electric switches and I wonder if it is my wiring. So I am appealing to the hive of experts to point out my failures so as to hope to redeem myself.
The Problem
with the switch on I only get 4.3 volts output
That’s like a drop of 6v across the BMS.
And a loss of 28v across the switch in the on position.
Do I have this wired up wrong? Am I an idiot that shorts out his stuff?
Here is my wiring diagram setup. Sorry I only have a dry erase board here.
Usually when those E-switches fail it locks in the on position. Have you tried just by-passing the switch?
Can you include a diagram for the balance wiring?
I don’t really sell switches I just had a small stock of them for my batteries that I sell. Hit up @goldenHusky he has some quality switches for a good price
I’ve had 2 of those switches fail on me. One worked for a while then overheated and got fried. The second just failed for no apparent reason after about 5 min of operation.
Now I use a BMS with built in switch and that has been very dependable.
I’m not familiar with battery supports bms and assuming you have all the balance leads securely connected and wired correctly, I cant see why there is a voltage drop at the output of the bms.
Maybe @barajabali has an idea about this.
That’s the exact situation I have had, one worked for a while and this one blew right away. I have looked into a BMS with a switch built in and would love that. Do you have a link from where you purchased your BMS from? I am not the biggest fan of this one. It is what failed last time. I have gone through with my multimeter on each balance lead and measured it and it is all good.
So it may be several problems. The BMS and the Switch.
Honestly maybe the bad BMS might have spiked and fried the switch.
@denton
Xt-90 loop key
Is the Best simple option so far.
I had the same issue a year ago, I understand that the electric switch is cool but I learned that a physical disconnect is a safer and more reliable option.
And keep up the good work
That is a great work on that enclosure.
I agree it is, however I wanted as professional looking and operating board as possible. So that means any idiot can operate it with one button. So far… not so good haha