I’m programming my stormcore 60 today, I’ll be using a 12s4p Panasonic battery rated for 96 continuous discharge amps,and 6384 boardnamics motors, is there anything special in the settings I need to know? I know I shouldn’t go over 96 amps divided by 2 and it’d be 96 for max amps or no? And braking is -20 I heard ? Any help is appreciated
1 Like
So your battery max of 96A (taking your word for that, meaning your cells are rated at 24A individually) does not need to be divided by 2 on the stormcore.
Your motor current max setting comes from the manufacturers specs on what amps the motors can handle, not the battery.
2 Likes
Correct me if i’m wrong, but on ESCs like Unity/Xenith/Stormcores and other duals, it should be treated like a single when it comes to battery current yea? So if his battery can do 96, then the battery current max should be 48A per side?
4 Likes
I’ve only done the flipsky 4 and you gotta program the other side
2 Likes
So where is the one that is deciding how many amps are actually being put to each motor?
1 Like
yes, as long u r using vesctool, then always treat as single
the only exception is the unity fw using the unity app
3 Likes
It was my understanding that only unity did that fuckery.
Nope it was the opposite, unity is the only one that does combined.
Not that one can pull more battery amps than set motor amps but still.
“Motor Current Max”, above that setting in that screenshot.
1 Like
It’s best to set the discharge current limit on the motor and the recharge current limit on the battery.
For the discharge, you don’t want to go over your motor specs. Going over the battery max discharge isn’t that bad, especially if it’s only for a short time (which it usually is). Plus the battery will cap itself – there’s a limit of how much current the battery can discharge. If you hit the limit occasionally, no major disaster will happen.
For recharge, you don’t want to go over your battery specs. Look up the max safe charge current for your cell type and multiply by the size of the parallel group (P). For example, if your Panasonic cells can handle the charge current of 4 Amps and you have 12S4P then you don’t want to go over 16 Amps (4 * 4 Amps) in total. If you have a dual drive, the safe limit would be 8 Amps per motor. Now, braking may be very weak with such a low limit so you may want to go a little over but only use full brakes in emergency. Not getting yourself killed is somewhat more important than not damaging your battery.
To summarize,
- set battery current max to “infinity” (a high value)
- set motor current max regen to “infinity”
- set motor current max according to your motor specs (e.g. 60A for most 6355 motors)
- set battery current max regen according to your battery specs (e.g. 8A per motor for a 12S4P battery using cells rated fro 4A charge current)
- go a little over the limit if the brakes are too weak but then don’t use full brakes unless necessary
1 Like
I don’t think you’ve made a single point that I agree with 
3 Likes
I wouldn’t do this.
Battery current needs to be calculated and set to what your cells are rated for, on the stormcore if his battery can only supply 96 amps without sagging a bunch I would start with 40 battery amps per side. For motor you can go over the manufacturers recommendation and for sure go over the detection values in vesc tool. Most 6374+ size motors I run at 100amps for motor current. You just need to be mindful of your temperatures, some motors can’t handle the heat too well and in those cases you want to dial the current back a bit
For motor break, this can be a high value like you mentioned
For battery regen, calculating this is good too, but going over the max allowable charge rate of your battery isn’t going to hurt it much at all. The reason for this is because even if you’d eat a really high value, your battery will only even see that for a millisecond, as soon as you start slowing down, that regen drops drastically
I would recommend trying
70-90 motor current depending on the motor size
-60/70 motor break
40-45 battery current
-30 battery regen
Adjust from there keeping in mind that motor current will effect your low speed torque/breaks and battery current will have more effect on high speed torque/breaks
8 Likes
Now i’m confused.
I also have stormcore. Should i half the battery and put both sides, or just set it on one side.
1 Like
Half it. I was backwards this morning 
5 Likes
This also depends on how you are programming if you are using the PC vesc tool, yes split your max battery current in half and write to both sides, if using the mobile app, it lets you write to both sides but yes you still have to split
This is also where a logging tool like metr really comes in handy, you can take a look and see how much current you are drawing from your battery and how much your battery is sagging. I would also always recommend that you set your motor current higher then battery current.
2 Likes
I made the mistake of not splitting once, had 100A per side on a focbox. I had the powertrain on a motor dyno I built trying to fault find why I kept getting thrown off (Maytech noisy temperature sensors in the end), and discovered another interesting issue on fw5.2 that was only happing with such high battery current. If you go near full throttle the voltage sag is so fast that the vesc doesn’t catch it and it fully cuts power then bounces back repeatedly like a car bouncing off the limiter. Best to split the current I say…
5 Likes
this
2 Likes
Ok I’m running 6384 boardnamics ATM, so they’re rated for 80, the battery can’t max them out obviously, so I was going to set 45 45 each motor then 80 for motor max current, 96 for max battery right? Or should I go higher than the continuous charge since it’s max discharge is surely higher? Although I’m unsure what it is
Sorry meant 45 for battery current each side
1 Like
Yeah 45 battery current each side will be great. And I would set your motors to 80 for each motor
And respectively something like -65 motor break break and -20 to 30 regen
For absolute maximum current you want to leave that setting at 200
1 Like
You can always add more motor current if you would like more startup torque.
Ok cool, can’t find the specs for it and I’ll m waiting for eovan to respond. All I know is it’s Panasonic 21700 cells, and it’s rated 96 continuous but I know some companies will put a lower rate for safety. But it doesn’t say the max, as for stuff like erpm should I just leave all that stuff and voltage cutoff start and end?
1 Like