With the basic method of charging, while the battery is connected to the power input of the EZ Lite Cruiser, you can connect the charger (Regular or Speedy) into the "front" of the joystick.  This method is called On-Board Charging.When charging by this method, please make sure to POWER OFF the EZ Lite Cruiser when charging the battery. If you attempt to charge the battery with the power on, it will not charge the battery.  When the chair is powered on, the fault indicator on your joystick will indicate that the charger is plugged in and you will not be able to drive the chair.  It will also not be charging the battery in this state.  You MUST ensure that the joystick is powered off for charging.As an alternative way to charge the battery, you can also plug the round plug of the charger into the round (XLR) plug on the battery.  This is called Off-Board Charging.  Doing this, you are bypassing the chairs electrical system, and simply connecting the charger right to the battery.