I took out the battery while the D35 / ST bike was on, now when I tried to insert the battery back the bike doesn't power on.
The battery is safeguarding against the short circuit. All you need to do is turn the battery off and then on and the bike should work fine.
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ENVO ST Manual
ENVO ST is ENVO e-bikes engineered by ENVO Drive Systems in Canada for British Columbia’s steep hills, Alberta’s freezing temperatures, the Maritimes’ chilly wind, Ontario’s long commutes and Quebec with all the above applied. Unboxing and Assembly ...Charger makes noise, doesn’t fully charge battery
Try alternate wall outlet. If noise continues and battery doesn’t charge, request charger replacement. Stop using faulty charger for safety.Bike won’t power on after wash/rain, likely connector/moisture issue
Let dry fully, unplug/reconnect battery and display. Use contact cleaner if confident. Escalate if doesn’t recover soon.ENVO D35/ST Quickguide
.Bike won’t start, display doesn’t show errors
Remove and re-attach battery, check for any loose hidden wiring; hold power button longer. If dead, request diagnostic procedure from ENVO.