It keeps my motorcycle battery charged up and a spare car battery.
Highly recommended.

If you have trailer batteries or a battery for a vehicle you don't use much - this is the best thing to get. You can just leave it plugged in and not worry about it and your battery will be perfect when you need it. Best product out there for that purpose.

Ordered to keep the battery's on my two Harleys up to charge between riding. Easy to mount to wall, came with two harnesses, one for each battery, and two sets of clips for temporary hook up. Once all is installed, easy enough, just plug in and let it do the work. Went to charge cycle for the first 6 hours or so, then maintain. Works well. Harley dealer wanted $75 for a single unit, same manufacturer, this is a better deal.

This is my second Battery Tender (in addition to a Junior), which I'm using to maintain a trailer battery and a Deep Cycle trailer battery. The unit can be wall mounted to save space, and quick connects make it easy to connect to your battery without worrying about reversing the polarity.

This was exactly what I was looking for. Dual port battery tender/charger. Able to charge two vehicle/motorcycle at a time. Nothing more could be said about this product. Simple use. Good craftsmanship. Comes with ring terminals and alligator clips extension cables. What else can be asked for?