That’s exactly what i was thinking, unless you take the whole group apart it seemed like the safest easiest option, but from my computer screen having no see the pack myself.
Solid plan, slower than if you could get to the cell but faster because you can’t without a bunch more work
Good luck and report back, im invested in the conclusion now 
I am getting a weird error on my charger/discharger. When set to lion discharge it says overvoltage and will not perform its job. The p group is 4.16. Ive been searching for some info online. This is the hold up atm.
Could anyone explain a buttons wiring diagram for a g300 Vesc?
Like what does the button actually connect?
I lost the original one, bought a bunch of 4 pin ones, and can’t make them work, they are instantly “on” if I plug them and don’t shut the Vesc once pushed.
Should the bms be unplugged or disconnected when performing p group discharging? The charger is registering a 2s 4.2v battery and wont work on the 1s or 2s setting.
Thanks
Nvm
Discharging with the lipo setting on 1s until i can switch over to lion when it recognizes
Would any random “bike extension bar” like this one work for matrix 2s, or do I need to print a custom adapter?
I used that exact style with no issue. May need to add some extra wrap to make it tight tight
That’s exactly what I was looking to hear, thanks bro
Would a d100 and trampa 6376s work with a 20s6p brick pack?
Thanks. Could the motors handle it?
Most likely, depends on the amps, and therefore motor watts you allow the motors to have.
Also depends on your ambient riding conditions, board+rider weight, motor Kv, gear ratio, drivetrain resistance, terrain, number of motors, weather, motor placement and a few other factors.
But at 20s you won’t need many amps at all, and assuming an appropriate gear ratio and Kv are selected you should be okay with only a handful of amps per motor.
Thanks for taking in all the variables 
Drivetrain:72-16 belt driven
160kv
Rider plus board weight: 140lbs
Pretty hilly terrain
2 motors
Yeah, as always with vesc, start low on amps and only increase it if necessary. Maybe start with 10A per motor and see how that is,
There is a file on Thingiverse from @Facko for an insert for the matrix 2’s that works well. I ran them on mine when I had them.
You think the adapter would be compatible with any?
maybe helps?
I have a Flipsky antispark that has a power switch but since I have makerx DV4 I have a power button. Can I remove that and put a xt90 antispark connector on the VESC and just connect it that way?
Personal bias, I hate these external switches and (due to personal experience) think they’re more likely to fail than a built in power switch.
Realistically, all 3 things (external flipsky anti-spark switch, internal DV4S anti spark switch, or an XT90 loopkey) would all 3 provide the same thing you need (a method to power on/off your vesc without damaging the connectors each time.)
If it were me;
I’d use the built in anti-spark that the DV4S has until it fails (which might or might not happen) at which point I’d add a loopkey to take it’s place.
The external antispark has been good since my old setup, I needed it so I could turn off my old VESC (Flipsky 4.12) I didn’t know the dv4 had an internal antispark switch. I checked the website to see and it didn’t have it included so I wasn’t sure but that cleared it up alot thank you. So should I use the xt antispark connector or just leave the normal connector on the VESC and have hope that it won’t break
sounds good