The Powerpac 650VA is an offline UPS that provides backup power and surge protection for your devices. It has a load capacity of 450W and a backup time of 10-16 minutes for one PC and one monitor. It has a plastic body, two output ports, and a built-in stabilizer. It uses a sealed, maintenance-free lead acid battery that takes 8 hours to recharge. It also has automatic shutdown, self-test, and short circuit protection features