Okay, I think you guys are missing the point of the question.
Im asking if anyone can help out with the namr of the exact device, instrument or aparatus that does the switcing.
Is it some type of relay switching unit, or what -- I do not know. I already understand the principles of battery backup with the different types of backup units there.
what exactly does the switching over is what Im trying to determine.
Thanks to the guys that help out
wall power ====>> charger ====>> battery ====>> inverter ====>> PC
There is no switch. As long as there is wall power, the battery is kept charged while the PC runs.
If wall power fails, I can run my PC about 15 minutes on just the battery. Power usually reroutes in minutes around here but sometimes much longer. 15 minutes is warning to close operations and prepare for shutdown unless power returns.
It's like having a magic beer mug that stays full as you drink. If the magic stops, you still have a full mug of beer. If/when the magic comes back, the mug will soon be full again.
PS I just wondering if anyone had to pause a few beats over the thought of such a mug.