Just like the other battery chargers made by DelTran, this is the best 6V charger available. Just connect to the battery, plug it in and leave it. You can leave this connected to the battery for 6 months if you have to. I have two 6V batteries for my 1975 CB125, has kept both of them trouble free and ready for use for two years now.
Bought this for my new Indian Scout (the dealer installed the pigtails for free so why not?). With the pigtail on your battery, maintaining your battery / extending the life of your battery is as simple as just plugging in when you get home or put the bike up for the winter. Very satisfied... The case MCSS offers for Battery Tender products for this model - it is TOO SMALL!
Picked this guy up right before a 4-day, 900 mile ride back in July. This plugged right into my battery tender plug and allowed me to run my iPhone charging cord to my iPhone on my handlebars. I stayed charged the entire time! My only complaint or nitpick is that it's a little bulky. Since it's a harder plastic, it doesn't bend, so if your quick disconnect plug is in a tight space, you may need to make some adjustments. Outside of that it was fantastic!