View Full Version : Backup battery

05/07/2017, 11:58 AM
I am going to add a backup battery to power a mp40qd.
I see ETM has added a general guide on how long the battery will power a unit, but what I'm wondering is how long ( in terms of years) can a person expect these units to be good for?

I just went through a 2 day power outage. Would have been nice to have already had one or 2 of these batteries.

But the last time I had a power outage that lasted more than a couple hours was several years ago.
If I don't have another power outage for 2-3 years, will a ETM Battery Backup unit still work?

What is the projected life?

05/07/2017, 04:42 PM
Once again I asked a question without doing a search in this forum.
I found my answer here.