This power system comes complete with the Ballistic Optimate 1 Lithium Charger and the EVO Health Monitor. The Optimate 1 Lithium Charger is a fully automatic battery charger was made to help you get the most out of your batter by allowing you to charge, optimize, and maintain the Ballistic power source. With this charger you don't have to worry about checking up on your battery because it is safe for 24/7 long term, unsupervised battery care. The EVO Health Monitor mounts outside the battery box for charged, discharged, over discharged, and over charged LED indication. Furthermore, the Optimate 1 Lithium Charger plugs directly into the EVO Health Monitor so you can keep your EVO battery in your motorcycle while you monitor its status.