My bms arrived and I noticed that it comes with leads for a “switch” of some sort? On the website it said “please contact us if needs this function”. Would that mean I can just switch on/off the bms to turn the board on/off? Or should my system still include an anti-spark loop key somewhere?
Also it doesnt say anywhere if it is a button-press or a physical switch that I need to connect to the leads (permanently connected leads or just connect them shortly to switch on/off as in a button)
Not sure if you’ve undone the motor again but the belt looks like it has some slack left = move motor further away = more clearance at least from the truck.
hmm yeah that true wouldnt be nice touching the truck, but toward enclosure isn’t possible. But would be an option to mount it back to droptrough because that was okey.
It’s my opinion (and probably that of the majority of other builders here) that you should not have your BMS wired in such a way that it can cut power to the board under any circumstances. If the BMS cuts power, you completely lose your brakes, which is super duper dangerous. For this reason alone I would strongly urge you to run your BMS bypassed for discharge, and use an anti-spark/loop key to power the board on/off.
you should set total cycle capacity to ~80% of the total battery capacity, so ~3600mah. Basically that setting is “how far am I going to discharge the battery?” whereas the other one is “if I drain it dead, what’s the absolute max capacity I can get?”
Okay, bms bypass for discharging noted! But my bms has a shared in/out connection (C- and B-) So I guess I just connect the pack connections to the motor and a separate charge port to the bms C-/B-.
On that note… the loosely hanging leads for the bms switch (that I wont use). Do I just solder them together so its permanently active? Or how does the switch work? (Do I disable the switch function somehow in the app via bluetooth?) I cant test the app at the moment for these settings as I havent built the pack yet because of these questions.
