I do not expect it to provide backup in a power loss event without good batteries but it should continue to work as a source of power and surge protector even without batteries as my old APC does

After the second year the Second unit would not stay on after a power loss!!

& I was able to power down devices without issuesBonus as I was able to power a lamp & my WiFi router for about 3 hours on the backup while the hurricane passedHad a random power loss (typical for my area) & a minute later when the power came back on I was at a loss that I

UPS easily keeps, modem, router, power supply convertor, relays, IP dialer going during power loss

$40 per year to ensure my electronic equipment is protected and that it won't shut off if a storm or whatever else causes a power loss is inexpensive peace of mind for me.

Sudden power loss does not help Hard Drive longevity.

I use this only for my cable modem and wifi routers, and I get several hours of backup time in the event of power loss.

A second of power loss causes them to reboot and the cable TV box takes a few minutes

and once we had power loss for other reason

I gave this product 5 stars for energy efficiency, because after one minute of power loss, the entire thing shuts down

$40 per year to ensure my electronic equipment is protected and that it won't shut off if a storm or whatever else causes a power loss is inexpensive peace of mind for me.

This UPS is for maintaining a yacht's internet and alarm notification at power loss

We have power outages 2-3x a year, and I wanted our raid server to complete a graceful shutdown 5 minutes after a power loss to ensure data integrity

I had lost a computer previously when it crashed during a power loss -

I called OG&E to complain and they told our electricity was terrible (which everyone in town already knows) and they would not accept responsibility for my television issues.