Battery balancing problem

harryS

Well-Known Member
Gionnii, I was curious on how the throttle and PAS work together on your newer BBS? Mine is from 2016, and was set up with throttle active in PAS 0, and I can ride in pedal assist and feather it in for more power if needed.

I had read on endless sphere that newer models have a glitch where if you add throttle input while under PAS, you get full throttle?

.And Carlos, be careful with aliexpress when a vendor starts off being very nice and offering to do good things for you. Some will promise you everything, but it's only sugared words. As soon as the aliexpress dispute period expires, they never answer your email, and you've also lost the chance to leave feedback. Escalate the dispute when you get close to the deadline.
 

Gionnirocket

Well-Known Member
Region
USA
City
Y. O.
Gionnii, I was curious on how the throttle and PAS work together on your newer BBS? Mine is from 2016, and was set up with throttle active in PAS 0, and I can ride in pedal assist and feather it in for more power if needed.

I had read on endless sphere that newer models have a glitch where if you add throttle input while under PAS, you get full throttle?

.And Carlos, be careful with aliexpress when a vendor starts off being very nice and offering to do good things for you. Some will promise you everything, but it's only sugared words. As soon as the aliexpress dispute period expires, they never answer your email, and you've also lost the chance to leave feedback. Escalate the dispute when you get close to the deadline.

That's a little hard to answer accurately because I changed my settings from stock so long ago.
But you can have the throttle work in PAS zero, and I did have it that way but never used it and have since changed PAS 0 to be just that, no Pas, no throttle
On feathering in its hard to say because I have my throttle set to be always on Pas 9. But if I do try to feather in there is a delay about half way up the throttle scale. That works fine for me as when I want throttle.... I want throttle. The second I stop pedaling the throttle is full scale and instantaneous.
I've found this to be fine and got used to utilizing it as I have two options for a quick burst, hit the throttle or tap up for a second to the next Pas. I've tamed my settings all around and it does both options smoothly.
 

Gionnirocket

Well-Known Member
Region
USA
City
Y. O.
Thanks, Gionnii. So it is a bit different.
I guess so. I went for a ride earlier and it is as you say.
If I engage throttle while pedaling in PAS 1 - 9 the throttle engages at full. If I'm not pedaling in PAS 1 - 9 I can use the throttle in its full range.
I never realized as when I have used it I was always in a higher PAS and I was moving briskly. To test it tonight I did it in PAS 1 moving slowly.
It kinda makes sense as it's like trying to use cruise control and the gas pedal at the same time.
Also as I said before my throttle is set to always be in PAS 9... I don't know what would happen if I returned to the stock setting which is to match what PAS my display is in.
It's really not bad when you get use to it. If you want a quick burst, just tap the throttle. If you want more controlled spead then just stop pedaling.
It comes second nature to me now
 

AHicks

Well-Known Member
Region
USA
City
Snow Bird - Summer S.E. Michigan, Winter Gulf Coast North Central Fl.
Not sure on the relelevance, but the KT controller I'm using is exactly the same. Full throttle when pedaling, and very easily modulated if you stop pedaling (all else equal, no changes, current PAS level not relevant).
 

Timpo

Well-Known Member
The BMS shouldn't be resetting anywhere near 50v, especially with the large capacity he purchased.
So yes bad cell, bad BMS?
I don't think you need to be specific about the problem, just show that there is a problem. Hence the suggestion to make a video.
or maybe reset the BMS? 🤔

 

Gionnirocket

Well-Known Member
Region
USA
City
Y. O.
or maybe reset the BMS? 🤔

Using the term reset with different problems and meaning. In the video I believe that they are addressing a battery that wouldn't charge. Possibly dropping below low voltage cut off too far and/or for too long
In the problem being discussed here the battery was shutting down at 50v when under load. No where near low volt cut off and "reset" on its own once voltage settled and/or increased.