u/Accomplished-Area619

I bought a vanmoof which wouldn’t charge anymore. When I came home I noticed the battery was totally fine when I inserted it into my bike. So I thought it just has to be the battery of the cartridge. I replaced it just now with a sennheiser one (VDC 3.7V 800mAh AHB702535PCT-01 )and the moment I plugged it in the skull appeared and the alarm sound was playing. I though that’s a sign it works. Now I put the cartridge back into a bike with working battery and the skull is flashing, no sound & no changing possible. what can I do to get the cartridge working again?

im removing my front fork but want to keep the break cable inside the fork so I don’t need to worry about guiding a new one through the fork. Is it possible to remove the break cable from the handlebar. I cannot manage to open it right at the break eventhough it looks like I could. Or is it not possible and I need to cut it?