r/VESC

▲ 8 r/VESC+3 crossposts

Pint Battery / BMS

Back in March I recieved an older OW2114xxxxxx Pint (5313 hw and 5040 fw) with a known bad battery. The board had sat for at least 2 yrs, but I was able revive the battery and balance the cells enough to get it back riding.

They would balance to 62.6v (4.18 ea) but then 2 of the cells would lose voltage pretty quickly. Clearly 2-4 bad cells (last picture).

I was able to use this as an extra/driveway board for friends...but had to constantly rebalance the cells after each session...while also closely monitering battery temp to <130F.

After the latest rebalance, the board will show 62.6v and then immediately drop to 22.5v and die when unplugged...but individual cells still show 4.17+...

Battery is obviously shot and I would like to replace the battery w an OnlyAmps or Nexus to extend the range...but am worried the BMS may be shot too.

Any thoughts on how to bench test a BMS?

They seem hard to come by and I dont really want to buy a whole new FW pack for $300...rather go aftermarket battery and use my existing BMS, if possible.

Appreciate any help/experience.

u/corteztheki11er — 3 days ago
▲ 4 r/VESC+1 crossposts

Good Build?

I have a gt but idk if i want a thor 301 or gtv kit from tony but i wondered if this list is decent or not. Im super new and i have a friend who will help with the settings.

u/n3v3rphazed — 4 days ago
▲ 2 r/VESC

Vesc stuttering with large direct drive ebike hub motor

Vesc is a flipsky 75100 pro v.2, 135 phase amps, 70 battery, 46 pole 6t, only way i could get it to run somewhat smooth is by turning the power down alot or turning my sensorless erpm up really high and turning the observer gain down alot, using mxv lamba comp observer, i have tried alot of settings and they seem to work mildly but turning the bike off and then back on brings the stutter back, any help is appreciated

u/Gasolinecity860 — 6 days ago
▲ 5 r/VESC+1 crossposts

Timing upgrades of xr+

I know I love riding this thing and I know I need more torque/would love more speed as well. I’m 6’1 215lbs- I know the best first upgrade is a new tire- but I’ve had my eye on upgrading to vesc since before I bought this used board in December of 25. Just didn’t want to committ a lot of money to a hobby I think I’d like.

I know I love it now, and riding on the trails/hills the limitations really show themselves on this xr.

As far as I can tell the battery/motor/sensor pad all work very well. I’ve already done some modest upgrades/grip tape etc.

I’m looking at the XRV kit-and I know I want it, but it felt silly to do that before just upgrading the Vega treaded tire.

Then I saw that the XRV page suggests I’d get even more power(i think torque specifically) by switching to the 5.2” mte hub.

Now I’m looking at like $1000 all in on these upgrades (XRV,tire,hub,bearings)

A-is it worth it? B-do the order of the upgrades make a difference? I’m assuming I’ll feel a lot more of the upgrade from the drop in kit than the new tire/smaller hub.

Full disclosure I bought the hub and tire because the TFL sale is about to end and I’m just trying to decide if it is silly to wait on the XRV drop in kit and just take the upgrades one at a time. Is there any downside besides having to do the work twice?

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u/Windmill_Tumor — 9 days ago
▲ 2 r/VESC+1 crossposts

BMS for 52v 20.8ah battery on vipcoo vs6 pro - upgraded to vesc

Is there a way to find out the BMS rating for the battery in the vipcoo vs6 pro or does anyone know the rating?

I've just installed x2 flipsky 75100 pro v2 controllers and getting the numbers below from the log for both controllers combined.

just worried these might be too high for the battery and want to set the battery amp to something more realistic

Total Peak Battery Draw (Current In): 99.45 Amps

​Total Peak Regen Braking: -108.0 Amps

​Total Peak Motor Current (Torque): 140.4 Amps

​Voltage Sag: Dropped from 57.6V to 48.4V under max load.

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u/Affectionate_Luck483 — 10 days ago
▲ 1 r/VESC

What is battery voltage regen cutoff start and why is the default 1000v?

u/LordAppples — 11 days ago
▲ 3 r/VESC+1 crossposts

Vesc throttle setup, am I doing something wrong?

I'm currently in the process of setting up a dual flipsky 75100 pro v2 controllers (only have one installed for now)

I've got a generic throttle connected to the 3v and adc1

I've gone through the setup etc, but something doesn't feel right.

When doing the in air test I'm getting a lot of deadzone at the beginning and the speed maxes out regardless of throttle position.

I'm using on of those generic thumb throttles

Val: 0.85

Now: 2.68v

Min: 0.89 V

Max: 2.69 V

Ctr: 1.79 V

u/Affectionate_Luck483 — 14 days ago
▲ 5 r/VESC

i want a speed limit switch/police switch (not my phone)

I have theese questions:

Is what im trying to do possible? (speed limit switch for 250w, 25 km/h pedal assist and 6km/h throttle)

Can i use Pedal sensor with vesc?

Can i make so pedal assist and throttle have different max speed?

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u/No-Break4297 — 15 days ago