On 07/10/2019 11:09, Dave Plowman (News) wrote:
In article ,
alan_m wrote:
On 07/10/2019 05:30, Andy Burns wrote:
Just had a power cut (70 minutes not too bad a fix time for an 11kV
fault I suppose)

OK, I did have to get up to silence the UPS (also shut down a couple of
unnecessary PCs while at it to extend runtime)

But most annoying is the 15 minutes of alarms sounding due to failed
batteries, then sounding again for another 15 minutes when the power
comes back ...

People seem to think this is normal/acceptable ...

No, that's why I change my battery in my alarm every 3 years.

Crikey. A decent SLA in such a friendly environment should last a lot
longer than that. Got 11 years out of one car battery.

It isn't all that benign an environment especially for the external bell
battery in the external sounder. Being on float charge ready to go kills
them in 3-5 years. Worth testing before swapping out though.

--
Regards,
Martin Brown