BE850G2 Battery Backup & Surge Protector for Electronics and Computers The Back-UPS battery backup offers guaranteed power and surge protection for wireless networks, computers, gaming consoles and other electronics in your home or business. Models supply battery backup during outages and unsafe voltage fluctuations, as well as provide protection from damaging surges and spikes. They\'re available in \'tower\' or \'floor\' styles, and together with a variety of standard features, they are the perfect choice to protect your data and keep you connected.