EX Custom iOS/Android App

[JJ2]

Question?
Is the voltage of the 7.2 different than the 6.5 battery?
And all the other signals from and to the battery?
It looks as if the connectors could be swapped... Then there is only the issue of signaling.
Old:
View attachment 14858

New:
View attachment 14859

Voltage is the same

 

[MotoNova]

@brongle what are the parameters for the delta V warning if I can ask?

I have a delta v of .076 but having no reference points, I don't know how out of spec this is. I'd rather avoid the discussion with Stark support on how I got alerted there might be an issue.

I also can't seem to charge over 98% and have a DC bus of 412.5v. Just trying to get a read on the severity of the issue, if there is one. EX model, bike isn't a month old.

 

[brongle]

@brongle what are the parameters for the delta V warning if I can ask?

I have a delta v of .076 but having no reference points, I don't know how out of spec this is. I'd rather avoid the discussion with Stark support on how I got alerted there might be an issue.

I also can't seem to charge over 98% and have a DC bus of 412.5v. Just trying to get a read on the severity of the issue, if there is one. EX model, bike isn't a month old.

That is quite high for a dV, I can't give you exact numbers because it depends a lot on pack layout and other internal factors but I based the numbers in the app off some research I did. Svag considers anything over 0.045 "high" as that's an ok mark to balance the battery at (which is the intention of the warning).

If the bike doesn't charge past 412.5v and it's brand new something is definitely wrong, I'd say just the fact it stops at 98% is enough to ask Stark for help. After 5000 miles on my EX over the past few months my battery will still reach just over 419v at full charge which is much more in line with the level of pack degradation you should expect. I don't think I've seen a dV of over 0.030 even after lots of short charging cycles and heavy use.

My guess would be Stark's internal charging logic will cut out somewhere around 0.075 or 0.080 dV which would probably make sense for a safety mechanism. Have you tried doing a balance charge by lowering the battery below 20% (in this case I'd personal target around 5%), charging to full, and then letting the bike sit on the charger for at least a few hours? I'm guessing this would be Starks first recommendation unless they have other data to point to a fault.