hyperionmark wrote: DaveinOlyWA wrote:
hyperionmark wrote:If short frequent charges were a problem then regen during braking would be destroying the battery.
It is along with jackrabbit starts... moreso than any other single factor
I believe you, but what is the reasoning? Seems like every other degradation variable is based around time and heat. This seems independent of those things. Just trying to learn more.
your statement implies that jackrabbit starts create no heat. Or is it no "significant" heat. So the question becomes "What is significant?"
I have to say that is a question I cannot answer since nearly everything we see here is highly filtered based on what the poster deemed important. There seems to be dozens of ideologies on that .
I have been a long time fan of neutral driving. Started waaaay before the LEAF arrived. It is a "very" small fan club, especially here. But it is essentially "no strings attached" miles. Since the traction pack is all but removed during neutral, its a win win. In my situation, sometimes regen is not the best option. (In reality, it should be avoided as much as possible along with brake usage)
But many here feel likes its some sort of safety issue. I have yet to hear a good or even logical explanation why. So its all about familiarity and comfort. Should you use neutral? That is up to you.
But lets look at another perspective; Regen is putting power into the battery at greatly varying rates and barring super high heat, its max is nearly QC speeds but at a higher SOC (only true in 24 kwh packs. This restriction is removed for 30 Kwh packs)
So we have regen at an elevated power level that is NOT available during a regular, monitored, controlled QC beyond a similar SOC, right?
Well, jackrabbit starts are "exactly" the same but mirrored. Same components, just running backwards so to speak. Charge out instead of charge in, every step essentially the same but reversed. Again, MUCH higher currents and nearly unrestricted. Why is this? Driveability obviously. Who wants to drive a slug?
But nothing is free (except driving in neutral!
) so we have compromises. These compromises caused too much degradation too fast so the power was tweaked. IOW, slightly less power off the time. a few more milliseconds added to the power ramp up. Pretty minor stuff really. Some noticed, I didn't simply cause I knew it was a trade off and didn't need it all that much. Not lucky enough to be first at the light (probably based on my perception that red lights are only pink for the first 3 seconds...
What was probably a better solution was putting in more modules to distribute the load. Now many here will say it doesn't make a difference but for no other reason than to justify their behavior because in reality, no one knows for sure and definitely cannot quantify the effect.
But the key thing is that its only my supposition. I have no proof and my logic, in most cases, only works for me.