Backup power for surveillance systems generally relies on batteries, especially since UPSes for computers are common and easily available.
However, uncertainty in picking the right backup power supply with the right batteries is a common problem, and the pitfalls of poor selection stretch beyond just having a weak system. In the note, we look at battery backup, the most common method for surveillance power backup.
In this report, IPVM examines:
UPSes run time delivered
Understanding UPS power units of measure
How to calculate surveillance system wattage
Using runtime graphs to determine supply duration
How much backup runtime is needed
Common factors affecting runtime
Why consumer UPSes often are too weak
Why battery-equipped power supplies may not be enough