the unit comes with well insulated clips, and a set of batter leads to leave attached to your bike, as shown in the top picture. I opted for the addition of the LED indicator leads as I wanted to be able to visually see if my battery needed any charge during and after a ride.
Super simple to connect to the wall unit.
Two minute hookup once I found a spot for it.
Indicator light blinks for 100%(top), 75%, 50% and 25%
Putting it to the test on this 3year old battery....
EDIT: Sure enough, this morning, the lights flashing were indicating the old battery is beyond revival. Metered charge was only 6.63v