When I got my C380+, I had ridden an EU spec ebike, and concluded that its 15.5mph assist limit made it of use only for hills. I was not an especially informed cyclist, and was frequently told that my cadence was too low, but I resisted that advice, and used some assist t oget up hills.
My first ride on my C380+ was a familiarization ride for the Enviolo, and my second was to see how hill climbing was. The Purion said I still had 3 bars of battery left, so I shouldn't need to recharge before a 12 mile ride on some hills, right?
Well, that turned out to be wrong! On my return leg, coming up to apass a T-junction where I wanted the comfort of knowing Turbo would be available, I selected Turbo with the range reading 2 miles, and the battery had no bars at all, no assist available, and that ws how I had to ride the last 2 miles home.
So where had all my electrons gone, why was I so poorly informed by my brand new ebike display, and why does my new bike have such a small battery at 500Wh and the 2nd battery kit is unavailable. I'm extremely disappointed.
I believe the electrons disappeared too quickly because my cadence was too low. Isuspect that the performance Line Speed motor is much the same as the CX, but is internally geared (or has some other design difference) so that it is more efficient at a higher cadence. My estimated average cadence was probably 43rpm. So I had to learn to raise that. Fewer difficulties now.
What was I so poorly informed by my display? I believe some US marketing guy thought the price point of the bike was too high and told Gazelle it would be fine to downgrade the EU standard Intuvia to a US standard Purion. If you look, you'll see this a lot of European imports of lots of products. The Purion can display Range, but it's quite difficult to bounce between Range and other readouts of interest. And the crude 0-5 bars display is essentially useless.
Why does my bike have such a small battery? Probably because either Bosch or Gazelle don't know or don't care how rapidly the battery on any Performance Line Speed motor can be consumed. Bosch does know, as they will tell you that only 32 miles might be the range with this setup, and in theory there is a dual battery kit available, so Bosch can sell more batteries. Gazelle may not know because the Netherlands is flat, so no hills, no problem.
And why is the dual batteyr kit unavailable? Maybe somebody told them that they'd never sell any so supply chain problems, just don't make any. If you can get one, then it's $150 or $200 price is a bargain.
All the electrical parts needed for a second battery are easy to get, making a nice stout bracket is hard, fittings the parts may be in your skill range, but your Gazelle dealer may tell you that they need to do it, or they'll have your Bosch warranty voided. Nice. Some dealers offer free labor on fitting if you buy the bike from them, but if you didn't, then they may well want $120/hour labor and won't know if they can complete the work in 4 hours.
If you want to fit an upgraded display, then you may be able to do that yourself, but you will have to remove and re-install a hydraulic brake line.