I probably didn't "have to" switch batteries at that point, but the cargo was a couple of new bigger batteries (now I have 3 batteries and 5 cradles that they all fit!) And there's something wrong with my #baseRunner controller settings, I think the battery current limit manifests as a sharp cut out, so I have to carefully use the throttle to get max sustainable power instead of none. Voltage drops, current needs to go up to maintain 700W. I think it handles power + torque limits smoothly-er.

Maybe the BMS would also handle battery current limiting more gracefully than the controller does?

Is it okay at this angle, with just two bolts supporting it? The 25Ah pack is a bit taller than the 17.5.

Ultimately I would like to fit it vertically between the front frame, but that setup will take more than a couple bolts, and will have it hanging rather low behind the wheel, needing some bash guard down there too. Or I build a triangle shelf here and have it sit more upright, probably wouldn't stick out so far.

@enobacon I specifically wanted to avoid having the battery impinging on the cargo area in my bakfiets. My initial placement had it kind of hanging off to the side, which I didn't love. Now I've got it hanging down from the top tube, which puts it higher than I'd like (and also makes me a bit nervous that something could fail and it could fall), but at least it's nicely out of the way.