1. Switch off the power. The battery can be charged on or off the bike.2. Plug the output lead of the charger into the socket of the battery case.3. Plug the AC power input plug into the 110/220 volt household power socket to start charging.4. After charging unplug from the wall outlet first and then from the bike charger socket.NOTE:Always charge your battery at temperatures between 50 and 80 Fahrenheitdegrees and make sure battery is not damaged before charging.1. When the input and output terminal are connected, the red indication light of the charger will be turned on, showing thepower is connected.2. When the battery is charged for the first time, 8-10 hours should be spent for charging. When the yellow indication light of thecharger is turned on, showing that the battery is full it will switch to trickle charge mode to ensure that over-charging will notoccur, it takes 2-8 hours for normal charging.3. This charger has a protection device for over-charging. Avoid charging for more than 24 hours as this may affectthe life of the battery.Additional Charging InfoWhen the battery is charging on the bikeDuration of charging6