NICE! Today Only, head over to Best Buy and get this APC- Back UPS 850VA Battery Back Up System for Only $69.99! (Reg. $109.99). 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.