I have a Btwin Electric bike and its flashing on the first light I ahve plugged this in to the charger a number of times and it still hasnt charged.The charger always shows a green light can any one help with a explanation
What does the manual say ?
Has the bike been used regularly? It's very important that the battery gets exercised regularly, particularly over the winter. If you let it go flat and leave it flat for a while it may not recharge. Made worse if its been sat discharged in a cold shed or garage.