Your Base Battery Agreement is for 10 years.
Base retains ownership of the battery for the entire 10 years, which means we warranty and handle any necessary maintenance on the system – at no cost to you. We will also replace the battery if necessary.
At the end of the 10 years, you will have the opportunity to decide if you'd like to renew your battery agreement or not.
Here is a link to the Base Battery agreement that details the terms of service of the battery system