This is the second one of these I've bought from APC, so that should be review enough (I needed 2 of this size to backup 3 computers, 4 monitors, router and modem).
So replace all the ones in the box as soon as you get a warning.Also keep the boxes plugged in and on charge if you aren't going to use them for a while.
Probably they worked that long because I didn't run my equipments for a long time without line currrent.Anyway, the backup was and is very useful because I have frequent blackouts and also the surge protection had to intervene frequently as the voltage is rather instable.Obviously my comment refers to my old backup (same type as the new one), as I'm using the new one only since a month, but so far everything is working fine.
The backup said it could power my computer for about an hour and a half but instead I used that power to keep my phones charged in case of a emergency.I would definitely recommend this for everyone because of the batteries and protection.One small issue I noticed was the first time using the device.
Very thing was fine for a couple of weeks then the dreaded chirping started.
The product failed 45 days after purchase and almost started a fire in my home.
Now as I try to return it, I keep getting sent to phone or chat and neither work and I can NOT return it either.
Defective out of the box.
However, I was very disappointed in how PCNation did absolutely nothing to try and assist with the defective unit they sent me.