Review on V7 Network 1500VA 3000VA UPSSNMP1 1N by Brennan Buckley

I think mine is defective. Doesn't go on battery power. Doesn't go on battery power. I'm very familiar with UPS as I work in IT but I don't see a way to access the battery to connect. It is sealed on all sides except the back where the backup and surge inputs are located. Normally every UPS is shipped with the battery disconnected for safety reasons. I can't find any control panel or access to the battery. Unless V7 Guru advises otherwise, I am willing to return it for a refund. Purchased on May 7th, 2018.