Protection from short duration blackouts is available in four series of battery back up with valuable designs and features.
How UPS (Uninterruptible Power Supply) Systems Works ~ Learning Electrical Engineering
4CH 27.6V 2A 60W UPS Battery Backup CCTV Power Distribution Box - China CCTV Power Supply, UPS Power Supply
WattBox UPS Battery Pack for IP Power Conditioners
UPS Slim 200 Watt Lithium Ion Battery Backup - AC Power Distribtion, Conditioning, and Control at JuiceGoose
The facts about modern rotary and static uninterruptible power systems (UPS)
UPS - Uninterruptible Power Supply, UPS Electrical
Uninterruptable Power Supply (UPS)
Eaton Commercial Battery Backup Power UPS
What is a UPS? - AC Power Distribtion, Conditioning, and Control at JuiceGoose
8CH 13.8V8a 120W Battery Backup UPS CCTV Power Supply Distribution Box - China CCTV Power Supply, UPS CCTV Power Supply
iPCS Isolated Power Control Station - Smart Power Systems - Emerge Power Solutions