It can be a bummer when you are about to head out for a ride and the battery won't turn on! The first step to take is to check that the charger is working. If the charger shows that it is charging or fully charged, remove the battery from the bike and check the battery's charger port for damage/blockage. Replace the battery and try again. If you are still having trouble, please contact us at firstname.lastname@example.org or 855-655-2549.