Where I go, the batteries go. It's a little wierd and I'm kinda getting used to it. They don't spend much time in "the cold" - I bought gloves today. One of my "exploration rides" last week took me over 3 frozen waterfalls - I walked over them instead of risking a dump. Wind resistance and "assistance" is significant here. Let's say that I've easily gotten windburnt over exhausted, and I do pedal on hills and such. It's threatening to snow, so the bike is shelved for a couple days.

My coworkers are fine with it as long as I don't charge at the office (they saw the videos.)

I'm beginning to see the limited value of a BMS, and after today's ride, I'm going to up the LVC to 34v from 33 for the pack. The serial charger is working fine without much help and I'll be able to finish the longer-range batteries shortly. I think I can outwait the production of the "BMS of choice" - but I wouldn't recommend that everyone try it.

As for the regen issue - I sorely missed the regen braking today going down some hills. At the very least, it saves on pads and the batteries bouncing all over. I was being careful, but could have let it go - and then I got passed by two police cars at the local ski hill. (Calgary Olympic Park).. I don't think that energy recpture is its strongest point, but then I still have yet to hit the end of the range on my 20Ah set...