Comment by harshaw
4 years ago
Great project. I have a 2018 giant quick e+ that is speed limited to 28mph for the US market - in reality gets up to 26-27. In general the push bike cycling technology is universal (SRAM, shimano, campy, etc kit works everywhere) but for e-bikes there are wierd oddities where all the enthusiasm of the international DIY community doesn't quite translate to different locations because of differences in the battery and motor. I wanted to add a supernova headlight to my bike and what seemed like it would work was really hard because the US wire harnesses were different, voltages were different, etc.
In order to support the weight of the motor and batteries these bikes tend to be really beefy and top out at around 50 lbs. Not sure how much your extra batteries weigh - but if you exhaust the batteries on a 50lb bike you need to make sure you have a super granny gear to get you home if you have hills.
Chances of depleting this battery in normal use are nil unless you end up driving to Berlin from Amsterdam or so :) It can go up to the country borders in every direction.
The added weight is 130 times 50 grams + the weight of the enclosure. 170 batteries in there, but the original battery already had 40 of those.
Agreed that you don't want to pedal it uphill without the motor running that would get old really quick.